M5A87 - Motherboard ASUS - Free user manual and instructions

USER MANUAL M5A87 ASUS

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Contents

Notices ...... vi

Safety information ...... vii

About this guide ...... viii

M5A87 specifications summary ix

Chapter 1: Product introduction

1.1 Welcome! 1-1
1.2 Package contents 1-1
1.3 Special features 1-1

1.3.1 Product highlights 1-1
1.3.2 Innovative ASUS features 1-3

1.4 Before you proceed 1-5
1.5 Motherboard overview 1-6

1.5.1 Placement direction 1-6
1.5.2 Screw holes 1-6
1.5.3 Motherboard layout 1-7
1.5.4 Layout contents 1-7

1.6 Central Processing Unit (CPU) 1-8

1.6.1 Installing the CPU 1-8
1.6.2 Installing the heatsink and fan 1-10

1.7 System memory 1-11

1.7.1 Overview 1-11
1.7.2 Memory configurations 1-12
1.7.3 Installing a DIMM 1-17
1.7.4 Removing a DIMM 1-17

1.8 Expansion slots 1-18

1.8.1 Installing an expansion card 1-18
1.8.2 Configuring an expansion card 1-18
1.8.3 PCI slots 1-18
1.8.4 PCI Express x1 slots 1-18
1.8.5 PCI Express x16 slot 1-18

1.9 Jumpers 1-19

1.10 Connectors 1-20

1.10.1 Rear panel ports 1-20
1.10.2 Internal connectors 1-21

Contents

1.11 Onboard switch 1-27
1.12 Onboard LEDs 1-29
1.13 Software support 1-30

1.13.1 Installing an operating system 1-30

1.13.2 Support DVD information 1-30

Chapter 2: BIOS information

2.1 Managing and updating your BIOS 2-1

2.1.1 ASUS Update 2-1
2.1.2 ASUS EZ Flash 2 2-2
2.1.3 ASUS CrashFree BIOS 3 2-3

2.2 BIOS setup program 2-4

2.2.1 BIOS menu screen 2-5
2.2.2 Menu bar 2-5
2.2.3 Navigation keys 2-5
2.2.4 Menu items 2-6
2.2.5 Submenu items 2-6
2.2.6 Configuration fields 2-6
2.2.7 Pop-up window 2-6
2.2.8 Scroll bar 2-6
2.2.9 General help 2-6

2.3 Main menu 2-7

2.3.1 System Time [xx:xx:xx] 2-7
2.3.2 System Date [Day xx/xx/xxxx] 2-7
2.3.3 SATA6G_1/2/3/4/5/6 2-7
2.3.4 SATA Configuration 2-8
2.3.5 System Information 2-9

2.4 Ai Tweaker menu 2-10

2.4.1 CPU Level UP [Auto] 2-10
2.4.2 CPU OverClocking [Auto] 2-11
2.4.3 CPU Ratio [Auto] 2-12
2.4.4 DRAM Frequency [Auto] 2-12
2.4.5 CPU/NB Frequency [Auto] 2-12
2.4.6 HT Link Speed [Auto] 2-12
2.4.7 DRAM Timing Configuration 2-13

Contents

2.4.8 DRAM Driving Configuration.... 2-14
2.4.9 CPU & NB Voltage Mode [Offset] 2-14
2.4.10 DRAM Voltage [Auto] 2-15
2.4.11 HT Voltage [Auto] 2-15
2.4.12 NB Voltage [Auto] 2-15
2.4.13 CPU Load-Line Calibration [Auto] 2-15
2.4.14 CPU/NB Load-Line Calibration [Auto] 2-15

2.5 Advanced menu 2-15

2.5.1 CPU Configuration 2-15
2.5.2 Chipset 2-16
2.5.3 Onboard Devices Configuration 2-17
2.5.4 PCIPnP 2-18
2.5.5 USB Configuration 2-18

2.6 Power menu 2-20

2.6.1 Suspend Mode [Auto] 2-20
2.6.2 ACPI 2.0 Support [Enabled] 2-20
2.6.3 ACPI APIC Support [Enabled] 2-20
2.6.4 APM Configuration 2-20
2.6.5 HW Monitor Configuration 2-21
2.6.6 Anti Surge Support [Enabled] 2-21

2.7 Boot menu 2-22

2.7.1 Boot Device Priority 2-22
2.7.2 Boot Settings Configuration 2-22
2.7.3 Security 2-23

2.8 Tools menu 2-25

2.8.1 ASUS EZ Flash 2 2-25
2.8.2 ASUS O.C. Profile 2-25

2.9 Exit menu 2-26

Notices

Federal Communications Commission Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

• This device may not cause harmful interference, and
- This device must accept any interference received including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with manufacturer's instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.

The use of shielded cables for connection of the monitor to the graphics card is required to assure compliance with FCC regulations. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

This class B digital apparatus complies with Canadian ICES-003.

ASUS Recycling/Takeback Services

ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for you to be able to responsibly recycle our products, batteries, other components as well as the packaging materials. Please go to http://csr.asus.com/english/Takeback.htm for the detailed recycling information in different regions.

REACH

Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) regulatory framework, we published the chemical substances in our products at ASUS REACH website at http://csr.asus.com/english/REACH.htm.

DO NOT throw the motherboard in municipal waste. This product has been designed to enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin indicates that the product (electrical and electronic equipment) should not be placed in municipal waste. Check local regulations for disposal of electronic products.

DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol of the crossed out wheeled bin indicates that the battery should not be placed in municipal waste.

Safety information

Electrical safety

• To prevent electric shock hazard, disconnect the power cable from the electric outlet before relocating the system.
• When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device.
• Before connecting or removing signal cables from the motherboard, ensure that all power cables are unplugged.
• Seek professional assistance before using an adapter or extension cord. These devices could interrupt the grounding circuit.
• Ensure that your power supply is set to the correct voltage in your area. If you are not sure about the voltage of the electrical outlet you are using, contact your local power company.
• If the power supply is broken, do not try to fix it by yourself. Contact a qualified service technician or your retailer.

Operation safety

• Before installing the motherboard and adding devices on it, carefully read all the manuals that came with the package.
• Before using the product, ensure that all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately.
• To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry.
• Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may become wet.
• Place the product on a stable surface.
• If you encounter technical problems with the product, contact a qualified service technician or your retailer.

About this guide

This user guide contains the information you need when installing and configuring the motherboard.

How this guide is organized

This guide contains the following parts:

• Chapter 1: Product introduction

This chapter describes the features of the motherboard and the new technology it supports.

• Chapter 2: BIOS information

This chapter tells how to change system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided.

Conventions used in this guide

To ensure that you perform certain tasks properly, take note of the following symbols used throughout this manual.

DANGER/WARNING: Information to prevent injury to yourself when trying to complete a task.

CAUTION: Information to prevent damage to the components when trying to complete a task.

IMPORTANT: Instructions that you MUST follow to complete a task.

NOTE: Tips and additional information to help you complete a task.

Where to find more information

Refer to the following sources for additional information and for product and software updates.

1. ASUS websites

The ASUS website provides updated information on ASUS hardware and software products. Refer to the ASUS contact information.

2. Optional documentation

Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer. These documents are not part of the standard package.

Typography

Bold text Indicates a menu or an item to select.

Italics Used to emphasize a word or a phrase.

Keys enclosed in the less-than and greater-than sign means that you must press the enclosed key.

Example: means that you must press the Enter or Return key.

++++ If you must press two or more keys simultaneously, the key names are linked with a plus sign (+).

Example: ++

M5A87 specifications summary

CPU AMD	^ Socket AM3+ for AMD ^ FX ^TM / Phenom ^TM II/Athlon ^TM II/Sempron ^TM 100 series processorsAMD ^ 140W CPU supportAMD ^ Cool ‘n’ Quiet ^TM Technology* 32nm AM3+ CPU is supported by BIOS version 0401 and later.** Refer towww.asus.comfor the AMD ^ CPU support list
Chipset AMD	^ 870/SB850
System bus Up to 5200 MT/s HyperTransport ^TM 3.0 interface
Memory Dual-channel memory architecture4 x 240-pin DIMM slots support maximum 16GB unbufferedECC and non-ECC DDR3 2000(O.C.)/1866(O.C.)/1600(O.C.)/1333/1066MHz memory modules* AMD ^ FX ^TM Series CPU on this motherboard supports up toDDR3 1866MHz as its standard memory frequency.** Due to CPU spec., AMD ^ 100 and 200 series CPUs supportup to DDR3 1066MHz. With ASUS design, this motherboardcan support up to DDR3 1333MHz.*** When overclocking, some AMD CPU models may notsupport DDR3 1600 MHz or higher frequency DIMMs.**** Refer towww.asus.comfor the latest Memory QVL (QualifiedVendors List).***** Use a 64-bit Windows ^ OS if you want to install 4GB or morememory on the motherboard.
Expansion slots 1 x PCIe 2.0 x16 slot2 x PCIe x1 slots3 x PCI slots
Storage / RAID AMD	^ SB850 southbridge:6 x Serial ATA 6.0Gb/s connectors support RAID 0, RAID 1,RAID 5, RAID 10 and JBOD configurations
LAN	Realtek ^ RTL8111E PCIe Gigabit LAN controller
Audio	ALC887 supports 8-channel* High Definition Audio- Supports Multi-recording, Anti-pop Function, and Front PanelRetasking (HD mode only)- Support S/PDIF out interface* Use the chassis with HD audio module in the front panel tosupport 8-channel audio output.
USB AMD	^ SB850 southbridge:- 12 x USB 2.0/1.1 ports (8 ports at the mid-board, 4 portsat the back panel)Asmedia USB3.0 controller:- 2 x USB 3.0/2.0 ports (blue, at the back panel)

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M5A87 specifications summary

ASUS unique features	ASUS Hybrid Switch- Core Unlocker- MemOK!ASUS Power Solutions- ASUS Anti-Surge Protection- ASUS EPUASUS Exclusive Features- TurboVASUS EZ DIY- ASUS AI Suite II- ASUS CrashFree BIOS 3- ASUS EZ Flash 2- ASUS MyLogo 2^TM 100% All high quality conductive polymer capacitors
ASUS exclusiveoverclocking features	Precision Tweaker 2- vCore: Adjustable CPU voltage at 0.003125V increment- vChipset (VDDNB): Adjustable chipset voltage at 0.003125V increment- vDIMM: Adjustable DRAM voltage at 0.010V incrementIntelligent overclocking tools:- Turbo KeySFS (Stepless Frequency Selection):- HT frequency tuning from 100MHz up to 550MHz at 1MHz increment- PCIe frequency tuning from 100MHz up to 150MHz at 1MHz incrementOverclocking Protection:- ASUS C.P.R (CPU Parameter Recall)
Back panel I/O ports	1 x PS/2 keyboard / mouse combo port1 x COM port1 x LPT port1 x LAN (RJ-45) port4 x USB 2.0/1.1 ports2 x USB 3.0/2.0 ports3 x Audio jacks

(continued on the next page)

M5A87 specifications summary

Internal I/O connectors / buttons / switches	4 x USB 2.0/1.1 connectors support additional 8 USB2.0/1.1 ports6 x SATA connectors1 x CPU fan connector1 x Chassis fan connector1 x Power fan connector1 x Front panel audio connector1 x S/PDIF output connector1 x System panel connector1 x 24-pin ATX power connector1 x 4-pin ATX 12V power connector1 x MemOK! button1 x Core Unlocker switch
BIOS 16Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0,ACPI2.0a, SM BIOS 2.6
Accessories 2 x Serial ATA 6.0Gb/s cables1 x I/O shield1 x User Manual1 x Support DVD
Support DVD Drivers	ASUS UpdateASUS utilitiesAnti-Virus software (OEM version)
Form factor ATX form factor: 12.0 in x 8.4 in (30.5 cm x 21.3 cm)

*Specifications are subject to change without notice.

Chapter 1

Product introduction

1.1 Welcome!

Thank you for buying an ASUS® M5A87 motherboard!

The motherboard delivers a host of new features and latest technologies, making it another standout in the long line of ASUS quality motherboards!

Before you start installing the motherboard, and hardware devices on it, check the items in your package with the list below.

1.2 Package contents

Check your motherboard package for the following items.

Motherboard ASUS M5A87 motherboard

Cables 2 x Serial ATA 6.0Gb/s cables

Accessories 1 x I/O shield

Application DVD ASUS motherboard Support DVD

Documentations User Manual

If any of the above items is damaged or missing, contact your retailer.

1.3 Special features

1.3.1 Product highlights

AMD® FX™ / Phenom™ II / Athlon™ II / Sempron™ 100 series CPU support

This motherboard supports AMD ^® Socket AM3+ multi-core processors with unique L3 cache and delivers better overclocking capabilities with less power consumption. It features dual-channel DDR3 memory support and accelerates data transfer rate up to 5200MT/s via HyperTransport ^™ 3.0-based system bus. This motherboard also supports AMD ^® CPUs in the new 32nm manufacturing process.

AMD® 870 Chipset

The AMD® 870 Chipset is designed to support up to 5200MT/s HyperTransport™ 3.0 (HT 3.0) interface speed and PCI Express 2.0 x16 graphics. It is optimized with AMD's latest AM3 multi-core CPUs to provide excellent system performance and overclocking capabilities.

HyperTransport™ 3.0 support

HyperTransport™ 3.0 technology provides 2.6 times more bandwidth than HT1.0 that radically improves system efficiency for a smoother and faster computing environment.

AMD Cool 'n' Quiet Technology

This motherboard supports the AMD Cool 'n' Quiet technology which monitors system operation and automatically adjusts CPU voltage and frequency for a cool and quiet operating environment.

Dual-Channel DDR3 2000(O.C.) support

This motherboard supports DDR3 memory that features data transfer rates of 2000 (O.C.)/1600 (O.C.)/1333/1066 MHz to meet the higher bandwidth requirements of the latest operating system, 3D graphics, multimedia, and Internet applications.

USB 3.0 support

Experience ultra-fast data transfer at 4.8Gbps with USB 3.0 – the latest connectivity standard. Built to connect easily with next-generation components and peripherals, USB 3.0 transfers data 10x faster and is also backward compatible with USB 2.0 components.

Serial ATA 6.0 Gb/s technology

The AMD ^® SB850 chipset natively supports the next generation SATA 6.0 Gb/s data transfer rate, enhances scalability, provides faster data retrieval, and doubles the bandwidth of the current bus systems.

Gigabit LAN solution

The onboard LAN controller is a highly integrated Gb LAN controller. It is enhanced with an ACPI management function to provide efficient power management for advanced operating systems.

8-channel high definition audio

The onboard 8-channel HD audio (High Definition Audio, previously codenamed Azalia) CODEC enables high-quality 192KHz/24-bit audio jack-sensing feature, retasking functions, and multi-streaming technology.

100% All High-quality Conductive Polymer Capacitors

This motherboard uses all high-quality conductive polymer capacitors for durability, improved lifespan, and enhanced thermal capacity.

1.3.2 Innovative ASUS features

Core Unlocker

ASUS Core Unlocker simplifies the activation of a latent AMD ^® CPU—with just a simple switch. Enjoy an instant performance boost by simply unlocking the extra cores, without performing complicated BIOS changes.

ASUS TurboV

Feel the adrenaline rush of real-time OC-now a reality with the ASUS TurboV. This easy OC tool allows you to overclock without exiting or rebooting the OS; and its user-friendly interface makes overclock with just a few clicks away. Moreover, the ASUS OC profiles in TurboV provides the best O.C. settings in different scenarios.

ASUS Turbo Key

ASUS Turbo Key allows you to turn the PC power button into an overclocking button. After the easy setup, Turbo Key boosts performances without interrupting ongoing work or games, simply through pressing the button.

MemOK!

MemOK! quickly ensures memory boot compatibility. This remarkable memory rescue tool requires a mere push of the button to patch memory issues. MemOK! determines failsafe settings and dramatically improves your system boot success. Get your system up and running in no time.

ASUS Anti-Surge Protection

This special design protects expensive devices and the motherboard from damage caused by power surges from switching power supply unit (PSU).

ASUS EPU

ASUS EPU is a unique power saving technology that detects the current system loadings and adjusts the power consumption in real time.

Al Suite II

With its fast user-friendly interface, ASUS AI Suite II consolidates all the exclusive ASUS features into one simple to use software package. It allows you to supervise overclocking, energy management, fan speed control, and voltage and sensor readings. This all-in-one software offers diverse and ease to use functions, with no need to switch back and forth between different utilities.

ASUS EZ Flash 2

ASUS EZ Flash 2 is a user-friendly utility that allows you to update the BIOS without using a bootable floppy disk or an OS-based utility.

ASUS MyLogo 2™

Turn your favorite photos into 256-color boot logos to personalize your system.

ASUS CrashFree BIOS 3

ASUS CrashFree BIOS 3 is an auto-recovery tool that allows you to restore a corrupted BIOS file using the bundled support DVD or a USB flash disk that contains the BIOS file.

C.P.R. (CPU Parameter Recall)

The BIOS C.P.R. feature automatically restores the CPU default settings when the system hangs due to overclocking failure. C.P.R. eliminates the need to open the system chassis and clear the RTC data. Simply shut down and reboot the system, and the BIOS automatically restores the CPU parameters to their default settings.

ErP ready

The motherboard is European Union's Energy-related Products (ErP) ready, and ErP requires products to meet certain energy efficiency requirements in regards to energy consumptions. This is in line with ASUS vision of creating environment-friendly and energy-efficient products through product design and innovation to reduce carbon footprint of the product and thus mitigate environmental impacts.

1.4 Before you proceed

Take note of the following precautions before you install motherboard components or change any motherboard settings.

• Unplug the power cord from the wall socket before touching any component.
• Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to avoid damaging them due to static electricity.
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component.
• Before you install or remove any component, switch off the ATX power supply and detach its power cord. Failure to do so may cause severe damage to the motherboard, peripherals, or components.

1.5 Motherboard overview

1.5.1 Placement direction

When installing the motherboard, ensure that you place it into the chassis in the correct orientation. The edge with external ports goes to the rear part of the chassis as indicated in the image below.

1.5.2 Screw holes

Place six screws into the holes indicated by circles to secure the motherboard to the chassis.

DO NOT overtighten the screws! Doing so can damage the motherboard.

Place this side towards the rear of the chassis. ASUS M5A87

1.5.3 Motherboard layout

234 1 21.3cm(8.4in) KB_USB56 COM1 LPT USB3_12 LAN1_USB12 CHA_FAN AUDIO AAFP ICS SUPRENE PCIEX1_1 AMD® 870 ASUS M5A87 PCIEX16 PCIEX1_2 Super I/O PCI1 PCI2 PCI3 SPDIF_OUT SB_PWR USB78 USB910 USB1112 USB1314 DI_RTC PANEL DDR3 DIMM_A1 (64bit, 240-pin module) DDR3 DIMM_A2 (64bit, 240-pin module) DDR3 DIMM_B1 (64bit, 240-pin module) DDR3 DIMM_B2 (64bit, 240-pin module) LATXPWR Linau Cell CMOS Power ISMb R/CIS SATAEC_1 SATAEC_2 SATAEC_3 SATAEC_4 SATAEC_5 SATAEC_6 SATAEC_7 SATAEC_8 SATAEC_9 30.5cm(12.0in) 7 2 8

1.5.4 Layout contents

Connectors/Jumpers/Slots/LED Page Connectors/Jumpers/Slots/LED Page
1. Power, CPU and chassis fan connectors (3-pin PWR_FAN, 4-pin CPU_FAN and 3-pin CHA_FAN)	1-21 8	SATA 6.0Gb/s connectors (7-pin SATA6G1~6) 1-23
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)	1-22 9	System panel connector (20-8 pin PANEL) 1-24
3. Core Unlocker switch (CORE_UNLOCKER)	1-27 10	Clear RTC RAM (3-pin CLRTC) 1-19
4. Core Unlocker LED (02LED1)	1-29 11	USB connectors (10-1 pin USB78, USB910, USB1112, USB1314)	1-26
5. DDR3 DIMM slots	1-11 12	Standby power LED (SB_PWR) 1-29
6. MemOK! switch	1-28 13	Digital audio connector (4-1 pin SPDIF_OUT) 1-25
7. DRAM LED (DRAM_LED)	1-29 14	Front panel audio connector (10-1 pin AAFP) 1-25

1.6 Central Processing Unit (CPU)

This motherboard comes with an AM3+ socket designed for FX™ / Phenom™ II / Athlon™ II / Sempron™ 100 series processors.

The AM3+ socket has a different pinout from the AM2+/AM2 socket. Ensure that you use a CPU designed for the AM3+ socket. The CPU fits in only one correct orientation. DO NOT force the CPU into the socket to prevent bending the pins and damaging the CPU!

1.6.1 Installing the CPU

To install a CPU:

1. Locate the CPU socket on the motherboard.

M5A87 CPU socket AM3+ AMD

1. Press the lever sideways to unlock the socket, then lift it up to a 90^-100^ angle.

Socket lever

Ensure that the socket lever is lifted up to a 90^-100^ angle; otherwise, the CPU will not fit in completely.

1. Position the CPU above the socket such that the CPU corner with the gold triangle matches the socket corner with a small triangle.

2. Carefully insert the CPU into the socket until it fits in place.

The CPU fits only in one correct orientation. DO NOT force the CPU into the socket to prevent bending the pins and damaging the CPU!

r e. Small triangle Gold triangle

1. When the CPU is in place, push down the socket lever to secure the CPU. The lever clicks on the side tab to indicate that it is locked.

2. Install a CPU heatsink and fan following the instructions that comes with the heatsink package. You can also refer to section 1.6.2 Installing heatsink and fan for instructions.

3. Connect the CPU fan cable to the CPU_FAN connector on the motherboard.

Diagram of a computer monitor with an open lid and a magnified inset showing the screen area (no text or symbols)

CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND ASUS MGA87

M5A87 CPU fan connector

DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector.

1.6.2 Installing the heatsink and fan

Ensure that you use only AMD-certified heatsink and fan assembly.

To install the CPU heatsink and fan:

1. Place the heatsink on top of the installed CPU, ensuring that the heatsink fits properly on the retention module base.

- The retention module base is already installed on the motherboard upon purchase.

- You do not have to remove the retention module base when installing the CPU or installing other motherboard components.

- If you purchased a separate CPU heatsink and fan assembly, ensure that a Thermal Interface Material is properly applied to the CPU heatsink or CPU before you install the heatsink and fan assembly.

CPU Fan CPU Heatsink Retention bracket Retention Module Base Retention bracket lock

Your boxed CPU heatsink and fan assembly should come with installation instructions for the CPU, heatsink, and the retention mechanism. If the instructions in this section do not match the CPU documentation, follow the latter.

1. Attach one end of the retention bracket to the retention module base.

Diagram illustrating the cooling process of a CPU, showing fan cooling and connected components with numbered annotations.

1. Align the other end of the retention bracket to the retention module base. A clicking sound denotes that the retention bracket is in place.

Ensure that the fan and heatsink assembly perfectly fits the retention mechanism module base, otherwise you cannot snap the retention bracket in place.

1. Push down the retention bracket lock on the retention mechanism to secure the heatsink and fan to the module base.

2. When the fan and heatsink assembly is in place, connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN.

DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector.

1.7 System memory

1.7.1 Overview

This motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules (DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for better performance with less power consumption. The figure illustrates the location of the DDR3 DIMM sockets:

ASUS M5A07 DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2

M5A87 240-pin DDR3 DIMM sockets

Channel Sockets

Channel A DIMM_A1 and DIMM_A2

Channel B DIMM_B1 and DIMM_B2

1.7.2 Memory configurations

You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR3 DIMMs into the DIMM sockets.

• You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation.
• We recommend that you install the memory modules from the blue slots for better overclocking capability.
• Always install DIMMs with the same CAS latency. For optimum compatibility, we recommend that you obtain memory modules from the same vendor.
• AMD ^ FX ^TM Series CPU on this motherboard supports up to DDR3 1866MHz as its standard memory frequency.
• Due to CPU spec., AMD ^® 100 and 200 series CPUs support up to DDR3 1066MHz. With ASUS design, this motherboard can support up to DDR3 1333MHz.
• When overclocking, some AMD CPU models may not support DDR3 1600 MHz or higher frequency DIMMs.

• Due to the memory address limitation on 32-bit Windows ^® OS, when you install 4GB or more memory on the motherboard, the actual usable memory for the OS can be about 3GB or less. For effective use of memory, we recommend that you do any of the following:

• Install a maximum of 3GB system memory if you are using a 32-bit Windows® OS.

• Use a 64-bit Windows ^® OS if you want to install 4GB or more memory on the motherboard.

- This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.

• The default memory operation frequency is dependent on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. To operate at the vendor-marked or at a higher frequency, refer to section 2.4 Ai Tweaker menu for manual memory frequency adjustment.
• For system stability, use a more efficient memory cooling system to support a full memory load (4 DIMMs) or overclocking condition.

M5A87 Motherboard Qualified Vendors Lists (QVL)

DDR3-2000(O.C.)MHz capability

Vendor Part No. Size			SS/DS	Chip Brand	Chip NO.	CL Voltage		DIMM support A^+ B^* C^+
Transcend	TX2400KLU-4GK(XMP)	4GB ( 2x 2GB )	DS	-	-	9-11-9-28	1.65V	•	•

DDR3-1866(O.C.)MHz capability

Vendor	Part No.	Size	SS/DS	Chip Brand	Chip NO.	CL Voltage DIMM support
								A* B* C*
Corsair	CMT4GX3M2A1866C9(XMP)	4GB(2 x 2GB)	DS	-	-	9-9-9-24	1.65V	•	•
Kingston	KHX1866C9D3T1K3/3GX(XMP)	3GB(3 x 1GB)	SS	-	-	-	1.65V	•	•
Kingston	KHX1866C9D3T1K3/6GX(XMP)	6GB(3 x 2GB)	SS	-	-	-	1.65V	•	•
OCZ	OCZ3G1866LV4GK	4GB(2 x 2GB)	DS	-	-	10-10-10-27	1.65V	•	•
OCZ	OCZ3P1866LV4GK	4GB(2 x 2GB)	DS	-	-	9-9-9-27	1.65V	•	•

DDR3-1800(O.C.)MHz capability

Vendor Part No. Size SS/	DS	Chip Brand	Chip NO.	CL Voltage DIMM support
				A*	B* C*
OCZ OCZ3P18004GK 4GB(2 x 2GB) DS -- 8-8-8-27 1.9V ••

DDR3-1600(O.C.)MHz capability

Vendor Part No. Size SS/			DS	Chip Brand	Chip NO.	CL	Voltage	DIMM support
								A*	B*	C*
A-Data	AD31600E001GM(O)U3K	3GB(3 x 1GB)	SS	-	-	8-8-8-24	1.65V-1.85V	•	•	•
CORSAIR	TR3X3G1600C8D(XMP)	3GB(3 x 1GB)	SS	-	-	8-8-8-24	1.65V	•	•	•
CORSAIR	CMP4GX3M2A1600C8(XMP)	4GB(2 x 2GB)	DS	-	-	8-8-8-24	1.65V	•	•	•
CORSAIR	CMT4GX3M2A1600C6(XMP)	4GB(2 x 2GB)	DS	-	-	6-6-6-20	1.65V	•	•	•
CORSAIR	CMX4GX3M2A1600C9(XMP)	4GB(2 x 2GB)	DS	-	-	9-9-9-24	1.65V	•	•
CORSAIR	CMX4GX3M2A1600C9(XMP)	4GB(2 x 2GB)	DS	-	-	9-9-9-24	1.65V	•	•	•
CORSAIR	TR3X6G1600C8D G(XMP)	6GB(3 x 2GB)	DS	-	-	8-8-8-24	1.65V	•	•	•
CORSAIR	TR3X6G1600C9 G(XMP)	6GB(3 x 2GB)	DS	-	-	9-9-9-24	1.65V	•	•	•
CORSAIR	CMX8GX3M4A1600C9(XMP)	8GB(4 x 2GB)	DS	-	-	9-9-9-24	1.65V	•	•	•
Crucial	BL25664BN1608.16FF(XMP)	6GB(3 x 2GB)	DS	-	-	-	-	•	•
G.SKILL	F3-12800CL9D-2GBNQ(XMP)	2GB(2 x 1GB)	SS	-	-	9-9-9-24	1.5V~1.6V	•	•
G.SKILL	F3-12800CL7D-4GBRH(XMP)	4GB(2 x 2GB)	SS	-	-	7-7-7-24	1.6V	•	•	•
G.SKILL	F3-12800CL7D-4GBECO(XMP)	4GB(2 x 2GB)	DS	-	-	7-7-8-24	XMP 1.35V	•	•	•
G.SKILL	F3-12800CL7D-4GBRM(XMP)	4GB(2 x 2GB)	DS	-	-	7-8-7-24	1.6V	•	•	•
G.SKILL	F3-12800CL8D-4GBRM(XMP)	4GB(2 x 2GB)	DS	-	-	8-8-8-24	1.60V	•	•	•
G.SKILL	F3-12800CL9T-6GBNQ(XMP)	6GB(3 x 2GB)	DS	-	-	9-9-9-24	1.5V~1.6V	•	•	•
GEIL	GET316GB1600C9QC(XMP)	16GB(4 x 4GB)	DS	-	-	9-9-9-28	1.6V	•	•	•
GEIL	GV34GB1600C8DC(XMP)	2GB	DS	-	-	8-8-8-28	1.6V	•	•
Kingmax	FLGD45F-B8KG9(XMP)	1GB	SS	Kingmax	KFB8FNGXF-ANX-12A	-	-	•	•	•
Kingmax	FLGE85F-B8KG9(XMP)	2GB	DS	Kingmax	KFB8FNGXF-ANX-12A	-	-	•	•	•
KINGSTON	KHX1600C9D3K3/12GX(XMP)	12GB(3x4GB)	DS	-	-	9-9-9-27	1.65V	•	•	•
KINGSTON	KHX1600C7D3K2/4GX(XMP)	4GB ( 2x 2GB )	DS	-	-	-	1.65V	•	•	•
Kingston	KHX1600C8D3K2/4GX(XMP)	4GB(2 x 2GB)	DS	-	-	8	1.65V	•	•	•
Kingston	KHX1600C8D3T1K2/4GX(XMP)	4GB(2 x 2GB)	DS	-	-	8	1.65V	•	•	•
KINGSTON	KHX1600C9D3T1K3/6GX(XMP)	6GB ( 3x 2GB )	DS	-	-	-	1.65V	•	•	•
Kingston	KHX1600C9D3K3/6GX(XMP)	6GB(3 x 2GB)	DS	-	-	9	1.65V	•	•	•
OCZ	OCZ3BE1600C8LV4GK	4GB(2 x 2GB)	DS	-	-	8-8-8-24	1.65V	•	•	•
OCZ	OCZ3BE1600LV4GK	4GB(2 x 2GB)	DS	-	-	7-7-7-24	1.65V	•	•	•
OCZ	OCZ3G16004GK	4GB(2 x 2GB)	DS	-	-	8-8-8-24	1.7V	•	•	•
OCZ	OCZ3OB1600LV4GK	4GB(2 x 2GB)	DS	-	-	-	1.65V	•	•	•
OCZ	OCZ3P1600EB4GK	4GB(2 x 2GB)	DS	-	-	7-7-6-24	1.8V	•	•	•
OCZ	OCZ3P1600LV4GK	4GB(2 x 2GB)	DS	-	-	7-7-7-24	1.65V	•	•	•
OCZ	OCZ3P1600LV4GK	4GB(2 x 2GB)	DS	-	-	7-7-7-24	1.65V	•	•
OCZ	OCZ3G1600LV6GK	6GB(3 x 2GB)	DS	-	-	8-8-8-24	1.65V	•	•	•
Super Talent	WA160UX6G9	6GB(3 x 2GB)	DS	-	-	9	-	•	•	•
Asint	SLZ3128M8-EGJ1D(XMP)	2GB	DS	Asint	3128M8-GJ1D	9-9-9-24	1.6V	•	•	•
Elixir	M2Y2G64CB8HA9N-DG(XMP)	2GB	DS	-	-	-	-	•	•	•
Kingtiger	KTG2G1600PG3	2GB	DS	-	-	-	-	•	•
Mushkin	998659(XMP)	6GB(3 x 2GB)	DS	-	-	9-9-9-24	-	•	•
Mushkin	998659(XMP)	6GB(3 x 2GB)	DS	-	-	9-9-9-24	1.5~1.6V	•	•	•
PATRIOT	PGS34G1600LLKA	4GB(2 x 2GB)	DS	-	-	7-7-7-20	1.7V	•	•	•

DDR3-1333MHz capability

Vendor Part No. Size SS/			DS	Chip Brand	Chip NO.	CL Voltage DIMM		support A* B* C*
A-Data AD31333001GOU 1GB SS A-Data AD30908C8D-151C					E0906	- - * *
A-Data	AD31333G001GOU	3GB(3 x 1GB)	SS	-	-	8-8-8-24	1.65-1.85V	•	•
A-Data	AD31333002GOU	2GB	DS	A-Data	AD30908C8D-151C E0903	- - * *
Apacer	78.A1GC6.9L1	2GB	DS	APACER	AM5D5808DEWSBG	-	-	•	•
Apacer	78.A1GC6.9L1	2GB	DS	Apacer	AM5D5808FEQSBG	9	-	•	•
CORSAIR	CM3X1024-1333C9DHX	1GB	SS	-	-	9-9-9-24	1.60V	•	•
CORSAIR	CM3X1024-1333C9	1GB	SS	-	-	9-9-9-24	1.60V	•	•
CORSAIR	TR3X3G1333C9 G	3GB(3 x 1GB)	SS	-	-	9-9-9-24	1.50V	•	•
CORSAIR	TR3X3G1333C9 G	3GB(3 x 1GB)	SS	-	-	9-9-9-24	1.50V	•	•
CORSAIR	TR3X3G1333C9	3GB(3 x 1GB)	SS	-	-	9-9-9-24	1.50V	•	•
CORSAIR	CM3X1024-1333C9DHX	1GB	DS	Corsair	-	-	-	•	•
CORSAIR	CM3X2048-1333C9DHX	2GB	DS	-	-	-	-	•	•
CORSAIR	TW3X4G1333C9 G	4GB(2 x 2GB)	DS	-	-	9-9-9-24	1.50V	•	•
CORSAIR	CMX8GX3M4A1333C9	8GB(4 x 2GB)	DS	-	-	9-9-9-24	1.50V	•	•
Crucial	CT12864BA1339.8FF	1GB	SS	Micron	9FF22D9KPT	9	-	•	•
Crucial	CT12872BA1339.9FF	1GB	SS	Micron	91F22D9KPT(ECC)	9	-	•	•
Crucial	CT25664BA1339.16FF	2GB	DS	Micron	9KF27D9KPT	9	-	•	•
Crucial	CT25672BA1339.18FF	2GB	DS	Micron	91F22D9KPT(ECC)	9	-	•	•
Crucial	BL25664BN1337.16FF (XMP)	6GB(3 x 2GB)	DS	-	-	7-7-7-24	1.65V	•	•
ELPIDA	EBJ10UE8EDF0-DJ-F	1GB	SS	ELPIDA	J1108EDSE-DJ-F	-	1.35V(low voltage)	***
ELPIDA	EBJ21UE8EDF0-DJ-F	2GB	DS	ELPIDA	J1108EDSE-DJ-F	-	1.35V(low voltage)	•	•
G.SKILL	F3-10600CL8D-2GBHK(XMP)	1GB	SS	G.SKILL	-	-	-	•	•
G.SKILL	F3-10666CL7T-3GBPK(XMP)	3GB(3 x 1GB)	SS	-	-	7-7-7-18	1.5~1.6V	•	•
G.SKILL	F3-10666CL9T-3GBNQ	3GB(3 x 1GB)	SS	-	-	9-9-9-24	1.5~1.6V	•	•
G.SKILL	F3-10600CL8D-4GBHK(XMP)	4GB(2 x 2GB)	DS	-	-	8-8-8-21	1.5-1.6V	•	•
G.SKILL F3-10666CL8D-4GBECO(XMP)		4GB(2 x 2GB)	DS	-	-	8-8-8-8-24	XMP 1.35V ***
GEIL	GV32GB1333C9DC	2GB(2 x 1GB)	DS	-	-	9-9-9-24	1.5V	•	•
GEIL	GV34GB1333C7DC	2GB	DS	-	-	7-7-7-24	1.5V	•	•
GEIL	GG34GB1333C9DC	4GB(2 x 2GB)	DS	GEIL	GL1L128M88BA12N	9-9-9-24	1.3V(low voltage)	•	•
GEIL	GV34GB1333C9DC	4GB(2 x 2GB)	DS	-	-	9-9-9-24	1.5V	•	•
Hynix	HMT125U6TFR8A-H9	2GB	DS	HYNIX	H5TC1G83TFRH9A	-	1.35V(low voltage)	***
KINGMAX	FLFD45F-B8KL9	1GB	SS	KINGMAX	KKB8FNWBFGNX-27A	-	-	•	•
KINGMAX	FLFE85F-B8KL9	2GB	DS	KINGMAX	KKB8FNWBFGNX-26A	-	-	•	•
Kingston	KVR1333D3N9/1G	1GB	SS	ELPIDA	J1108BDBG-DJ-F	9	1.5V	•	•
KINGSTON	KVR1333D3N9/2G(low profile)	2GB	DS	ELPIDA	J1108BDBG-DJ-F	9	1.5V	•	•
Kingston	KVR1333D3N9/2G	2GB	DS	KTC	D1288JPNDPLD9U	9	1.5V	•	•
Kingston	KVR1333D3N9/2G	2GB	DS	ELPIDA	J1108BDSE-DJ-F	9	1.5V	•	•
Kingston	KHX1333C7D3K2/4GX(XMP)	4GB(2 x 2GB)	DS	-	-	7	1.65V	•	•
Kingston	KHX1333C9D3UK2/4GX(XMP)	4GB(2 x 2GB)	DS	-	-	9	XMP 1.25V	•	•
KINGSTON	KVR1333D3N9/4G(low profile)	4GB	DS	HYNIX	H5TQ2G83AFRH9C	9	1.5V	•	•
KINGSTON	KVR1333D3N9/4G	4GB	DS	Hynix	H5TQ2G83AFR	-	-	•	•
MICRON	MT4JTF12864AZ-1G4D1	1GB	SS	MICRON	D9LGQ	-	-	•	•
Micron	MT8JTF12864AZ-1G4F1	1GB	SS	Micron	9FF22D9KPT	9	-	•	•
Micron	MT9JSF12872AZ-1G4F1	1GB	SS	Micron	91F22D9KPT(ECC)	9	-	•	•
MICRON	MT8JTF25664AZ-1G4D1	2GB	SS	MICRON	D9LGK	-	-	•	•
Micron	MT16JTF25664AZ-1G4F1	2GB	DS	Micron	9KF27D9KPT	9	-	•	•
Micron	MT18JSF25672AZ-1G4F1	2GB	DS	Micron	91F22D9KPT(ECC)	9	-	•	•
MICRON	MT16JTF51264AZ-1G4D1	4GB	DS	MICRON	D9LGK	-	-	•	•
OCZ	OCZ3G1333LV3GK	3GB(3 x 1GB)	DS	-	-	9-9-9-20	1.65V	•	•
OCZ	OCZ3F13334GK	4GB(2 x 2GB)	DS	-	-	9-9-9-20	1.7V	•	•
OCZ	OCZ3G13334GK	4GB(2 x 2GB)	DS	-	-	9-9-9-20	1.7V	•	•
OCZ	OCZ3G1333LV4GK	4GB(2 x 2GB)	DS	-	-	9-9-9-20	1.65V	•	•
OCZ	OCZ3P1333LV4GK	4GB(2 x 2GB)	DS	-	-	7-7-7-20	1.65V	•	•
OCZ	OCZ3RPX1333EB4GK	4GB(2 x 2GB)	DS	-	-	6-5-5-20	1.85V	•	•
OCZ	OCZ3X13334GK(XMP)	4GB(2 x 2GB)	DS	-	-	7-7-7-20	1.75V	•	•
OCZ	OCZ3G1333LV6GK	6GB(3 x 2GB)	DS	-	-	9-9-9-20	1.65V	•	•

(continued on the next page)

DDR3-1333MHz capability

Vendor Part No. Size SS/			DS	Chip Brand	Chip NO.	CL Voltage DIMM		support A* B* C*
OCZ	OCZ3P1333LV6GK	6GB(3 x 2GB)	DS	-	-	7-7-7-20	1.65V	•	•
OCZ	OCZ3X1333LV6GK(XMP)	6GB(3 x 2GB)	DS	-	-	8-8-8-20	1.60V	•	•
OCZ	OCZ3G1333LV8GK	8GB ( 2x 4GB )	DS	-	-	9-9-9-20	1.65V	•	•
PSC	AL7F8G73D-DG1	1GB	SS	PSC	A3P1GF3DGF928M9B05	8-8-8-24	1.5V	•	•
PSC	AL8F8G73D-DG1	2GB	DS	PSC	A3P1GF3DGF928M9B05	8-8-8-24	1.5V	•	•
SAMSUNG	M378B2873DZ1-CH9	1GB	SS	Samsung	SEC 846 HCH9 K4B1G08460	-	-	••	•
SAMSUNG	M378B2873EH1-CH9	1GB	SS	Samsung	SEC 913 HCH9 K4B1G0846E	-	-	••	•
SAMSUNG	M378B2873FHS-CH9	1GB	SS	Samsung	K4B1G0846F	-	-	•	•
SAMSUNG	M391B2873DZ1-CH9	1GB	SS	Samsung	K4B1G0846D-HCH9(ECC)	-	-	••	•
SAMSUNG	M378B5673DZ1-CH9	2GB	DS	Samsung	K4B1G0846D-HCH9	-	-	•	•
SAMSUNG	M378B5673EH1-CH9	2GB	DS	Samsung	SEC 913 HCH9 K4B1G0846E	-	-	••
SAMSUNG	M378B5673FH0-CH9	2GB	DS	Samsung	K4B1G0846F	-	-	•	•
SAMSUNG	M391B5673DZ1-CH9	2GB	DS	Samsung	K4B1G0846D-HCH9(ECC)	-	-	••	•
SAMSUNG	M378B5273CH0-CH9	4GB	DS	Samsung	K4B2G0846C	-	-	•	•
Super Talent	W1333UA1GH	1GB	SS	HYNIX	H5TQ1G83TFR	9	-	•	•
Super Talent	W1333X2GB8(XMP)	1GB	SS	-	-	-	-	•	•
Super Talent	W1333UB2GS	2GB	DS	Samsung	K4B1G0846F	9	-	•	•
Super Talent	W1333UB4GS	4GB	DS	Samsung	K4B2G0846C	-	-	•	•
Super Talent	W1333UX6GM	6GB(3x 2GB)	DS	Micron	0BF27D9KPT	9-9-9-24	1.5V	•	•
Transcend	TS256MLK64V3U	2GB	DS	Micron	9GF27D9KPT	-	-	•	•
Transcend	TS256MLK64V3U	2GB	DS	Elpida	J1108BDBG-DJ-F	9	-	•	•
Century	PC3-10600 DDR3-1333 9-9-9	1GB	SS	Micron	8FD22D9JNM	-	-	•	•
Elixir	M2F2G64CB88B7N-CG	2GB	DS	Elixir	N2CB2G808N-CG	-	-	•	•
Elixir	M2Y2G64CB8HC9N-CG	2GB	DS	Elixir	-	-	-	•	•
Elixir	M2F4G64CB8HB5N-CG	4GB	DS	Elixir	N2CB2G808N-CG	-	-	•	•
Kingtiger	2GB DIMM PC3-10666	2GB	DS	Samsung	SEC 904 HCH9 K4B1G0846D	-	-	••	•
Kingtiger	KTG2G1333PG3	2GB	DS	-	-	-	-	•	•
PATRIOT	PSD31G13332H	1GB	DS	-	-	9	-	•	•
PATRIOT	PSD31G13332	1GB	DS	Patriot	PM64M8D38U-15	-	-	•	•
SILICON POWER	SP001GBLTU133S01	1GB	SS	NANYA	NT5CB128M8AN-CG	9	-	•	•
SILICON POWER	SP002GBLTU133S02	2GB	DS	elixir	N2CB1680AN-C6	9	-	•	•
TAKEMS	TMS1GB364D081-107EY	1GB	SS	-	-	7-7-7-20	1.5V	•	•
TAKEMS	TMS1GB364D081-138EY	1GB	SS	-	-	8-8-8-24	1.5V	•	•
TAKEMS	TMS2GB364D081-107EY	2GB	DS	-	-	7-7-7-20	1.5V	•	•
TAKEMS	TMS2GB364D081-138EY	2GB	DS	-	-	8-8-8-24	1.5V	•	•
TAKEMS	TMS2GB364D082-138EW	2GB	DS	-	-	8-8-8-24	1.5V	•	•
UMAX	E41302GP0-73BDB	2GB	DS	UMAX	U2S24D30TP-13	-	-	•	•
V-Color	TD2G16C9-Z8	2GB	DS	HYNIX	H5TQ1G83AFP	-	-	•	•

DDR3-1066MHz capability

Vendor Part No. Size SS/			DS	Chip Brand	Chip NO.	CL Voltage DIMM support
								A*	B*	C*
Crucial	CT12864BA1067.8FF	1GB	SS	Micron	9GF22D9KPT	7	-	•	•	•
Crucial	CT12872BA1067.9FF	1GB	SS	Micron	9HF22D9KPT(ECC)	7	-	•	•	•
Crucial	CT25664BA1067.16FF	2GB	DS	Micron	9HF22D9KPT	7	-	•	•	•
Crucial	CT25672BA1067.18FF	2GB	DS	Micron	9GF22D9KPT(ECC)	7	-	•	•	•
ELPIDA	EBJ10UE8EDF0-AE-F	1GB	SS	ELPIDA	J1108EDSE-DJ-F	-	1.35V(low voltage)	•	•	•
ELPIDA	EBJ11UD8BAFA-AE-E	1GB	DS	Elpida	J5308BASE-AC-E	-	-	•	•	•
ELPIDA	EBJ21UE8EDF0-AE-F	2GB	DS	ELPIDA	J1108EDSE-DJ-F	-	1.35V(low voltage)	•	•	•
KINGSTON	KVR1066D3E7/1G	1GB	SS	ELPIDA	J1108BDBG-DJ-F(ECC)	7	1.5V •	•	•
KINGSTON	KVR1066D3N7/1G	1GB	SS	KTC	D1288JPNDPLD9U	7	1.5V	•	•	•
KINGSTON	KVR1066D3N7/2G	2GB	DS	ELPIDA	J1108BDSE-DJ-F	7	1.5V	•	•	•
KINGSTON	KVR1066D3N7/4G	4GB	DS	Hynix	H5TQ2G83AFR	7	1.5V	•	•	•
Micron	MT8JTF12864AZ-1G1F1	1GB	SS	Micron	9GF22D9KPT	7	-	•	•	•
Micron	MT9JSF12872AZ-1G1F1	1GB	SS	Micron	9HF22D9KPT(ECC)	7	-	•	•	•
Micron	MT16JTF25664AZ-1G1F1	2GB	DS	Micron	9HF22D9KPT	7	-	•	•	•
Micron	MT18JSF25672AZ-1G1F1	2GB	DS	Micron	9GF22D9KPT(ECC)	7	-	•	•	•
OCZ	OCZ3G1066LV4GK	4GB(2 x 2GB)	DS	Micron	9BF27D9KPV	7-7-7-20	1.65V	•	•	•
SAMSUNG	M378B2873EH1-CF8	1GB	SS	Samsung	SEC 901 HCF8 K4B1G0846E	-	-	•	•	•
SAMSUNG	M378B5273BH1-CF8	4GB	DS	SAMSUNG	846 K4B2G0846B-HCF8	-	-	•	•	•

• AMD ^ FX ^TM Series CPU on this motherboard supports up to DDR3 1866MHz as its standard memory frequency.
• Due to CPU spec., AMD ^3 100 and 200 series CPUs support up to DDR3 1066MHz. With ASUS design, this motherboard can support up to DDR3 1333MHz.
• When overclocking, some AMD CPU models may not support DDR3 1600 MHz or higher frequency DIMMs.

SS: Single-sided / DS: Double-sided DIMM support:

• A*: Supports one module inserted into any slot as single-channel memory configuration.
• B*: Supports one pair of modules inserted into either the blue slots or the black slots as one pair of dual-channel memory configuration.
• C*: Supports two pairs of modules inserted into both the blue slots and the black slots as two pairs of dual-channel memory configuration.

When using a DDR3 2000MHz memory module, ensure to install it on the A1 slot for better overclocking capability.

Visit the ASUS website at www.asus.com for the latest QVL.

1.7.3 Installing a DIMM

Unplug the power supply before adding or removing DIMMs or other system components. Failure to do so can cause severe damage to both the motherboard and the components.

1. Press the retaining clips outward to unlock a DIMM socket.
2. Align a DIMM on the socket such that the notch on the DIMM matches the DIMM slot key on the socket.

t ne 1 Unlocked retaining clip 2 DIMM notch 1 DIMM slot key

A DIMM is keyed with a notch so that it fits in only one direction. DO NOT force a DIMM into a socket in the wrong direction to avoid damaging the DIMM.

1. Firmly insert the DIMM into the socket until the retaining clips snap back in place and the DIMM is properly seated.

3 d Retaining Clip

1.7.4 Removing a DIMM

To remove a DIMM:

1. Simultaneously press the retaining clips outward to unlock the DIMM.

Support the DIMM lightly with your fingers when pressing the retaining clips. The DIMM might get damaged when it flips out with extra force.

DIMM notch

1. Remove the DIMM from the socket.

1.8 Expansion slots

In the future, you may need to install expansion cards. The following sub-sections describe the slots and the expansion cards that they support.

Unplug the power cord before adding or removing expansion cards. Failure to do so may cause you physical injury and damage motherboard components.

1.8.1 Installing an expansion card

To install an expansion card:

1. Before installing the expansion card, read the documentation that came with it and make the necessary hardware settings for the card.
2. Remove the system unit cover (if your motherboard is already installed in a chassis).
3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later use.
4. Align the card connector with the slot and press firmly until the card is completely seated on the slot.
5. Secure the card to the chassis with the screw you removed earlier.
6. Replace the system cover.

1.8.2 Configuring an expansion card

After installing the expansion card, configure it by adjusting the software settings.

1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for information on BIOS setup.
2. Assign an IRQ to the card.
3. Install the software drivers for the expansion card.

When using PCI cards on shared slots, ensure that the drivers support "Share IRQ" or that the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable.

1.8.3 PCI slots

The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specifications.

1.8.4 PCI Express x1 slots

This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that comply with the PCI Express specifications.

1.8.5 PCI Express x16 slot

This motherboard supports a PCI Express x16 graphics card that complies with the PCI Express specifications.

1.9 Jumpers

Clear RTC RAM (CLRTC)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear the CMOS memory of date, time, and system setup parameters by erasing the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in CMOS, which include system setup information such as system passwords.

M5A87 Clear RTC RAM CLRTC 1 2 2 3 Normal (Default) Clear RTC

To erase the RTC RAM:

1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3 for about 5\~10 seconds, then move the cap back to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the key during the boot process and enter BIOS setup to reenter data.

Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default position. Removing the cap will cause system boot failure!

• If the steps above do not help, remove the onboard battery and move the jumper again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.
• You do not need to clear the RTC when the system hangs due to overclocking. For system failure due to overclocking, use the CPU Parameter Recall (C.P.R) feature. Shut down and reboot the system so the BIOS can automatically reset parameter settings to default values.

1.10 Connectors

1.10.1 Rear panel ports

1 2 3 4 5 6 7 8 9 10

1. PS/2 Keyboard/Mouse Combo port (purple/green). This port is for a PS/2 keyboard or PS/2 mouse.
2. Parallel port. This 25-pin port connects a parallel printer, a scanner, or other devices.
3. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN) through a network hub.

LAN port LED indications

Activity/Link LED	Speed LED
Status Description Status Description
OFF No link OFF 10Mbps connection
ORANGE Linked ORANGE 100Mbps connection
BLINKING Data activity GREEN 1Gbps connection

ACT/LINK SPEED LED LED LAN port

1. Line In port (light blue). This port connects to the tape, CD, DVD player, or other audio sources.
2. Line Out port (lime). This port connects to a headphone or a speaker. In the 4, 6, and 8-channel configurations, the function of this port becomes Front Speaker Out.
3. Microphone port (pink). This port connects to a microphone.

Refer to the audio configuration table on the next page for the function of the audio ports in a 2, 4, 6, or 8-channel configuration.

Audio 2, 4, 6, or 8-channel configuration

Port Headset 2-channel 4-channel 6-channel 8-channel
Light Blue (Rear panel)	Line In Rear Speaker Out	Rear Speaker Out	Rear Speaker Out
Lime (Rear panel)	Line Out Front Speaker Out	Front Speaker Out	Front Speaker Out
Pink (Rear panel) Mic	In Mic In Bass/Center	Bass/Center
Lime (Front panel)	-	-	-	Side Speaker Out

To configure an 8-channel audio output:

Use the chassis with HD audio module in the front panel to support 8-channel audio output.

1. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are for USB 2.0/1.1 devices.
2. USB 3.0 ports 1 and 2 . These two 4-pin Universal Serial Bus (USB) ports are for USB 3.0 devices.
3. Serial port. This 9-pin COM1 port is for pointing devices or other serial devices.
4. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are for USB 2.0/1.1 devices.

1.10.2 Internal connectors

1. Power, CPU and chassis fan connectors (3-pin PWR FAN, 4-pin CPU_FAN and 3-pin CHA_FAN)

Connect the fan cables to the fan connectors on the motherboard, ensuring that the black wire of each cable matches the ground pin of the connector.

PWR_FAN CPU_FAN Rotation +12V GND CPU FAN PWM CPU FAN IN CPU FAN PWR GND CHA_FAN GND +12V Rotation M3A87

M5A87 Fan connectors

DO NOT forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors.

Only the 4-pin CPU fan supports the ASUS Q-Fan feature.

2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)

These connectors are for an ATX power supply. The plugs from the power supply are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.

ATX12V EATXPWR +3 Volts GND +12 Volts +5 Volts +12 Volts +5 Volts +5V Standby +5 Volts Power OK -5 Volts GND GND +5 Volts GND GND GND +5 Volts PSON# GND GND +3 Volts -12 Volts +3 Volts +3 Volts PIN 1 PIN 1

M5A87 ATX power connectors

• We recommend that you use an ATX 12V Specification 2.0-compliant power supply unit (PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin power plugs.
• If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin power plug can provide at least 15 A on +12 V and that the PSU has a minimum power rating of 300W. The system may become unstable or may not boot up if the power is inadequate.
• DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will not boot up.
• We recommend that you use a PSU with higher power output when configuring a system with more power-consuming devices or when you intend to install additional devices. The system may become unstable or may not boot up if the power is inadequate.
• If you are uncertain about the minimum power supply requirement for your system, refer to the Recommended Power Supply Wattage Calculator at http://support.asus.com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.

3. AMD SB850 Serial ATA 6.0 Gb/s connectors (7-pin SATA6G 1\~6)

These connectors are for the Serial ATA 6.0 Gb/s signal cables for Serial ATA hard disk drives and optical disc drives. If you installed Serial ATA hard disk drives, you can create a RAID 0, RAID 1, RAID 5, or RAID 10 configuration through the onboard AMD® SB850 controller.

SATA6G_1 SATA6G_3 SATA6G_5 SATA6G_2 SATA6G_4 SATA6G_6 RSATA_TXP1 RSATA_TXP2 RSATA_TXP3 RSATA_TXP4 RSATA_TXP5 RSATA_TXP6 RSATA_TXP7 RSATA_TXP8 RSATA_TXP9 RSATA_TXP10 RSATA_TXP11 RSATA_TXP12 RSATA_TXP13 RSATA_TXP14 RSATA_TXP15 RSATA_TXP16 RSATA_TXP17 RSATA_TXP18 RSATA_TXP19 RSATA_TXP20 RSATA_TXP21 RSATA_TXP22 RSATA_TXP23 RSATA_TXP24 RSATA_TXP25 RSATA_TXP26 RSATA_TXP27 RSATA_TXP28 RSATA_TXP29 RSATA_TXP30 RSATA_TXP31 RSATA_TXP32 RSATA_TXP33 RSATA_TXP34 RSATA_TXP35 RSATA_TXP36 RSATA_TXP37 RSATA_TXP38 RSATA_TXP39 RSATA_TXP40 RSATA_TXP41 RSATA_TXP42 RSATA_TXP43 RSATA_TXP44 RSATA_TXP45 RSATA_TXP46 RSATA_TXP47 RSATA_TXP48 RSATA_TXP49 RSATA_TXP50 RSATA_TXP51 RSATA_TXP52 RSATA_TXP53 RSATA_TXP54 RSATA_TXP55 RSATA_TXP56

M5A87 SATA 6.0Gb/s connectors

• These connectors are set to IDE mode by default. In IDE mode, you can connect Serial ATA boot/data hard disk drives to these connectors. If you intend to create a Serial ATA RAID set using these connectors, set the type of the SATA connectors in the BIOS to [RAID]. See section 2.3.4 SATA Configuration for details.
• You must install Windows ^ XP Service Pack 3 or later version before using Serial ATA hard disk drives. The Serial ATA RAID feature is available only if you are using Windows ^ XP SP3 or later version.
• When using hot-plug and NCQ, set the type of the SATA connectors in the BIOS to [AHCI]. See section 2.3.4 SATA Configuration for details.

4. System panel connector (20-8 pin PANEL)

This connector supports several chassis-mounted functions.

PANEL * Requires an ATX power supply

M5A87 System panel connector

• System power LED (2-pin PLED)

This 2-pin connector is for the system power LED. Connect the chassis power LED cable to this connector. The system power LED lights up when you turn on the system power, and blinks when the system is in sleep mode.

- Hard disk drive activity LED (2-pin IDE\_LED)

This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable to this connector. The IDE LED lights up or flashes when data is read from or written to the HDD.

- System warning speaker (4-pin SPEAKER)

This 4-pin connector is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings.

- ATX power button/soft-off button (2-pin PWRSW)

This connector is for the system power button.

- Reset button (2-pin RESET)

This 2-pin connector is for the chassis-mounted reset button for system reboot without turning off the system power.

5. Digital audio connector (4-1 pin SPDIF\_OUT)

This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.

R3A8 M5A87 +5V SPDIFOUT GND SPDIF_OUT

M5A87 Digital audio connector

Ensure that the audio device of Sound playback is Realtek High Definition Audio (the name may be different based on the OS). Go to Start > Control Panel > Sounds and Audio Devices > Sound Playback to configure the setting.

The S/PDIF module is purchased separately.

6. Front panel audio connector (10-1 pin AAFP)

This connector is for a chassis-mounted front panel audio I/O module that supports either High Definition Audio or AC'97 audio standard. Connect one end of the front panel audio I/O module cable to this connector.

graph LR
    A["Board with SENSE2_RETUR"] --> B["HD-audio-compliant pin definition"]
    C["MSA87"] --> A
    D["SENSE1_RETUR"] --> E["HD-audio-compliant pin definition"]
    F["SENSE_SEND"] --> G["HD-audio-compliant pin definition"]
    H["PRESENT#"] --> I["HD-audio-compliant pin definition"]
    J["GND"] --> K["HD-audio-compliant pin definition"]
    L["PIN 1"] --> M["HD-audio-compliant pin definition"]
    N["PIN 1"] --> O["Legacy AC'97 compliant definition"]
    P["PIN 1"] --> Q["Line out_L NC"]
    R["PIN 1"] --> S["Line out_R NC"]
    T["PIN 1"] --> U["MICPWR AGND"]

M5A87 Front panel audio connector

- We recommend that you connect a high-definition front panel audio module to this connector to avail of the motherboard high-definition audio capability.

- If you want to connect a high definition front panel audio module to this connector, set the Front Panel Select item in the BIOS to [HD Audio]. See section 2.5.3 Onboard Devices Configuration for details.

- The front panel audio I/O module is purchased separately.

7. USB connectors (10-1 pin USB78, USB910, USB1112, USB1314)

These connectors are for USB 2.0 ports. Connect the USB module cable to any of these connectors, then install the module to a slot opening at the back of the system chassis. These USB connectors comply with USB 2.0 specification that supports up to 480Mbps connection speed.

USB78 USB910 USB1112 USB1314 USB+5V USB_P7- USB_P8+ GND NC PIN 1 USB+5V USB_P7- USB_P8+ GND PIN 1 USB+5V USB_P9- USB_P9+ GND PIN 1 USB+5V USB_P10- USB_P10+ GND PIN 1 USB+5V USB_P11- USB_P11+ GND PIN 1 USB+5V USB_P12- USB_P12+ GND PIN 1 USB+5V USB_P13- USB_P13+ GND

M5A87 USB2.0 connectors

Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!

The USB 2.0 module is purchased separately.

1.11 Onboard switch

Onboard switches allow you to fine-tune performance when working on a bare or open-case system. This is ideal for overclockers and gamers who continually change settings to enhance system performance.

1. Core Unlocker switch

This switch allows you to unlock the extra cores of your CPU.

To ensure system performance, turn the switch setting to Enable when the system is powered off.

CORE_UNLOCKER Enable Disable (Default) MSAB7

M5A87 Core Unlocker switch

• The O2LED1 LED near the Core Unlocker switch lights when the switch setting is turned to Enable. Refer to section 1.12 Onboard LEDs for the exact location of the O2LED1 LED.
• You may also press <4> during the Power-On-Self-Test (POST) or enable the ASUS Core Unlocker item in the BIOS menu to activate the Core Unlocker function.
• The system will use the last setting you have made.
• If you load the BIOS setup defaults, the ASUS Core Unlocker item in the BIOS menu follows the current setting of the Core Unlocker switch.
• If you clear the CMOS, the Core Unlocker feature will be disabled regardless of the current settings of the BIOS setup and the Core Unlocker switch.

2. MemOK! switch

Installing DIMMs that are incompatible with the motherboard may cause system boot failure, and the DRAM_LED near the MemOK! switch lights continuously. Press and hold the MemOK! switch until the DRAM_LED starts blinking to begin automatic memory compatibility tuning for successful boot.

MemOK! M5A37 ASIS

M5A87 MemOK! switch

• Refer to section 1.12 Onboard LEDs for the exact location of the DRAM_LED.
- The DRAM_LED also lights when the DIMM is not properly installed. Turn off the system and reinstall the DIMM before using the MemOK! function.
- The MemOK! switch does not function under Windows® OS environment.
- During the tuning process, the system loads and tests failsafe memory settings. It takes about 30 seconds for the system to test one set of failsafe settings. If the test fails, the system reboots and test the next set of failsafe settings. The blinking speed of the DRAM_LED increases, indicating different test processes.
- Due to memory tuning requirement, the system automatically reboots when each timing set is tested. If the installed DIMMs still fail to boot after the whole tuning process, the DRAM_LED lights continuously. Replace the DIMMs with ones recommended in the Memory QVL (Qualified Vendors Lists) in this user manual or on the ASUS website at www.asus.com.
- If you turn off the computer and replace DIMMs during the tuning process, the system continues memory tuning after turning on the computer. To stop memory tuning, turn off the computer and unplug the power cord for about 5–10 seconds.
- If your system fail to boot due to BIOS overclocking, press the MemOK! switch to boot and load BIOS default settings. A message will appear during POST reminding you that the BIOS has been restored to its default settings.
- We recommend that you download and update to the latest BIOS version from the ASUS website at www.asus.com after using the MemOK! function.

1.12 Onboard LEDs

1. Standby Power LED

The motherboard comes with a standby power LED that lights up to indicate that the system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down the system and unplug the power cable before removing or plugging in any motherboard component. The illustration below shows the location of the onboard LED.

M5A87 Onboard LED SB_PWR ON Standby Power Powered Off

2. DRAM LED

DRAM LED checks the DRAM in sequence during motherboard booting process. If an error is found, the LED next to the error device will continue lighting until the problem is solved. This user-friendly design provides an intuitional way to locate the root problem within a second.

DRAM LED M5A87 DRAM LED

3. Core Unlocker LED

The Core Unlocker LED lights when the Core Unclocker switch is turned to Enable.

O2LED1 MGA87

M5A87 Core Unlocker LED

The Core Unlocker LED keeps on lighting even though the ASUS Core Unlocker item in the BIOS menu is set to [Disabled].

1.13 Software support

1.13.1 Installing an operating system

This motherboard supports Windows® XP / Vista / 7 Operating Systems (OS). Always install the latest OS version and corresponding updates to maximize the features of your hardware.

• Motherboard settings and hardware options vary. Refer to your OS documentation for detailed information.
• Ensure that you install Windows ^® XP Service Pack 3 or later versions / Windows ^® Vista Service Pack 1 or later versions before installing the drivers for better compatibility and system stability.

1.13.2 Support DVD information

The Support DVD that comes with the motherboard package contains the drivers, software applications, and utilities that you can install to avail all motherboard features.

The contents of the Support DVD are subject to change at any time without notice. Visit the ASUS website at www.asus.com for updates.

To run the Support DVD

Place the Support DVD into the optical drive. If Autorun is enabled in your computer, the DVD automatically displays the Specials screen. Click Drivers, Utilities, Make Disk, Manual, and Contact tabs to display their respective menus.

The following screen is for reference only.

ASUS MEAST motherboard setup CD Drivers Driver Make Disk Manual Connect Specials ASUS InstAll AMD Chipset Driver Realtek Audio Driver Realtek LAN Driver Browser Configuration Utility USB 3.0 Driver Norton Internet Security 2011 MB Please select items to install. Click an icon to display Support DVD/ motherboard information

Click an item to install

If Autorun is NOT enabled on your computer, browse the contents of the Support DVD to locate the file ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run the DVD.

Chapter 2

BIOS information

2.1 Managing and updating your BIOS

Save a copy of the original motherboard BIOS file to a USB flash disk in case you need to restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update utility.

2.1.1 ASUS Update

The ASUS Update is a utility that allows you to manage, save, and update the motherboard BIOS in Windows ^® environment.

• ASUS Update requires an Internet connection either through a network or an Internet Service Provider (ISP).
• This utility is available in the support DVD that comes with the motherboard package.

Installing ASUS Update

To install ASUS Update:

1. Place the support DVD in the optical drive. The Drivers menu appears.
2. Click the Utilities tab, then click AI Suite II.
3. Follow the onscreen instructions to complete the installation.

Quit all Windows® applications before you update the BIOS using this utility.

Updating the BIOS

To update the BIOS:

1. From the Windows ^ desktop, click Start > Programs > ASUS > AI Suite II > AI Suite II X.XX.XX to launch the AI Suite II utility. The AI Suite II Quick Bar appears.
2. Click Update button from the Quick Bar, and then click ASUS Update from the popup menu. The ASUS Update main screen appears. From the list, select either of the following methods: Updating from the Internet

a. Select Update BIOS from the Internet, then click Next.

b. Select the ASUS FTP site nearest you to avoid network traffic, then click Next.

c. From the FTP site, select the BIOS version that you wish to download then click Next.

The ASUS Update utility is capable of updating itself through the Internet. Always update the utility to avail all its features.

Updating from a BIOS file

a. Select Update BIOS from a file, then click Next.

b. Locate the BIOS file from the Open window, then click Open.

1. Follow the onscreen instructions to complete the updating process.

2.1.2 ASUS EZ Flash 2

The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based utility.

Before you start using this utility, download the latest BIOS file from the ASUS website at www.asus.com.

To update the BIOS using EZ Flash 2:

1. Insert the USB flash disk that contains the latest BIOS file to the USB port, then launch EZ Flash 2 in either of these two ways:

- Press + during POST.

- Enter the BIOS setup program. Go to the press to enable it. Tools menu to select EZ Flash 2 and

Press to switch between drives until the correct BIOS file is found.

ASUSTek EZ Flash 2 BIOS ROM Utility V4.14 Current ROM BOARD: M5A87 VER: 0302 (H:00 B:01) DATE: 03/08/2011 Update ROM BOARD: Unknown VER: Unknown DATE: Unknown PATH: C:\ C: Note [Enter] Select or Load [Tab] Switch [V] Drive Info [Up/Down/Home/End] Move [B] Backup [ESC] Exit

1. When the correct BIOS file is found, EZ Flash 2 performs the BIOS update process and automatically reboots the system when done.

• This function supports USB flash disks with FAT 32/16 format and single partition only.
- DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure!

2.1.3 ASUS CrashFree BIOS 3

ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS file using the motherboard support DVD or a USB flash drive that contains the BIOS file.

• Before using this utility, rename the BIOS file in the USB flash drive into M5A87.ROM.
• Download the latest BIOS file from the ASUS website at www.asus.com.

Recovering the BIOS

To recover the BIOS:

1. Turn on the system.
2. Insert the support DVD to the optical drive or the removable device that contains the BIOS file to the USB port or to the floppy disk drive, if supported.
3. The utility automatically checks the devices for the BIOS file. When found, the utility reads the BIOS file and starts flashing the corrupted BIOS file.
4. Turn off the system after the utility completes the updating process and turn on again.

DO NOT shut down or reset the system while updating the BIOS! Doing so can cause system boot failure!

Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Setup Defaults item under the Exit menu. Refer to section 2.9 Exit menu for details.

2.2 BIOS setup program

Use the BIOS Setup program to update the BIOS or configure its parameters. The BIOS screens include navigation keys and brief online help to guide you in using the BIOS Setup program.

Entering BIOS Setup at startup

To enter BIOS Setup at startup:

- Press during the Power-On Self-Test (POST). If you do not press , POST continues with its routines.

Entering BIOS Setup after POST

To enter BIOS Setup after POST:

• Press ++ simultaneously.
• Press the reset button on the system chassis.
• Press the power button to turn the system off then back on. Do this option only if you failed to enter BIOS Setup using the first two options.

Using the power button, reset button, or the ++ keys to force reset from a running operating system can cause damage to your data or system. We recommend that you always shut down the system properly from the operating system.

• The default BIOS settings for this motherboard apply to most conditions to ensure optimum performance. If the system becomes unstable after changing any BIOS settings, load the default settings to ensure system compatibility and stability. Select the Load Setup Defaults item under the Exit menu. See section 2.9 Exit Menu.
• The BIOS setup screens in this chapter are for reference only. They may not exactly match what you see on your screen.
• Visit the ASUS website at www.asus.com to download the latest BIOS file for this motherboard.

2.2.1 BIOS menu screen

Menu items Menu bar Configuration fields General help Main Ai Tweaker Advanced M5A87 BIOS Setup Power Boot Tools Exit Version 0302 Main Settings System Time [16:34:30] System Date [Tue 01/11/2011] SATA6G_1 : [Not Detected] SATA6G_2 : [Not Detected] SATA6G_3 : [Not Detected] SATA6G_4 : [Not Detected] SATA6G_5 : [Not Detected] SATA6G_6 : [Not Detected] SATA Configuration System Information Use [ENTER], [TAB] or [SHIFT-TAB] to select a field. Use [+] or [-] to configure system Time. Select Screen Select Item +- Change Field Tab Select Field F1 General Help F10 Save and Exit ESC Exit v02.61 (C) Copyright 1985-2011, American Megatrends, Inc. Submenu items Navigation keys

2.2.2 Menu bar

The menu bar on top of the screen has the following main items:

Main For changing the basic system configuration

Ai Tweaker For changing the overclocking settings

Advanced For changing the advanced system settings

Power For changing the advanced power management (APM) configuration

Boot For changing the system boot configuration

Tools For configuring options for special functions

Exit For selecting the exit options and loading default settings.

To select an item on the menu bar, press the right or left arrow key on the keyboard until the desired item is highlighted.

2.2.3 Navigation keys

At the bottom right corner of a menu screen are the navigation keys for that particular menu. Use the navigation keys to select items in the menu and change the settings.

Some of the navigation keys differ from one screen to another.

2.2.4 Menu items

The highlighted item on the menu bar displays the specific items for that menu. For example, selecting Main shows the Main menu items.

The other items (Advanced, Power, Boot, Tools, and Exit) on the menu bar have their respective menu items.

2.2.5 Submenu items

A solid triangle before each item on a menu screen means that the item has a submenu. To display the submenu, select the item and press .

2.2.6 Configuration fields

These fields show the values for the menu items. If an item is user- configurable, you can change the value of the field opposite the item. You cannot select an item that is not user-configurable.

A configurable field is enclosed in brackets, and is highlighted when selected. To change the value of a field, select it then press to display a list of options. Refer to 2.2.7 Pop-up window.

2.2.7 Pop-up window

Select a menu item then press to display a pop-up window with the configuration options for that item.

2.2.8 Scroll bar

A scroll bar appears on the right side of a menu screen when there are items that do not fit on the screen. Press the / arrow keys or / keys to display the other items on the screen.

M5A8 / BIOS Setup Power Boot Tools Exit Version 0302 Main AI Tweaker Advanced Power Boot Tools Exit Power Settings Suspend Mode [Auto] ACPI 2.0 Support [Disabled] ACPI APIC support [Enabled] ▶ APM Configuration ▶ HW Monitor Configuration Anti Surge Support [Enabled] Use [ENTER], [TAB] or [SHIFT-TAB] to select a field. Use [+] or [-] to configure system Time. Select Screen Select Item +- Change Option F1 General Help F10 Save and Exit ESC Exit v02.61 (C) Copyright 1985-2011, American, American Megatrends, Inc. Pop-up window Scroll bar

2.2.9 General help

At the top right corner of the menu screen is a brief description of the selected item.

2.3 Main menu

When you enter the BIOS Setup program, the Main menu screen appears, giving you an overview of the basic system information.

Refer to section 2.2.1 BIOS menu screen for information on the menu screen items and how to navigate through them.

M5A87 BIOS Setup Version 0302 Main Ai Tweaker Advanced Power Boot Tools Exit Main Settings System Time [16:34:30] System Date [Tue 01/11/2011] ► SATA6G_1 : [Not Detected] ► SATA6G_2 : [Not Detected] ► SATA6G_3 : [Not Detected] ► SATA6G_4 : [Not Detected] ► SATA6G_5 : [Not Detected] ► SATA6G_6 : [Not Detected] ► SATA Configuration ► System Information Use [ENTER], [TAB] or [SHIFT-TAB] to select a field. Use [+] or [-] to configure system Time. ←→ Select Screen ↑↓ Select Item +- Change Field Tab Select Field F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.

2.3.1 System Time [xx:xx:xx]

Allows you to set the system time.

2.3.2 System Date [Day xx/xx/xxxx]

Allows you to set the system date.

2.3.3 SATA6G\_1/2/3/4/5/6

While entering Setup, the BIOS automatically detects the presence of SATA devices. There is a separate submenu for each SATA device. Select a device item then press to display the SATA device information.

The BIOS automatically detects the values opposite the dimmed items (Device, Vendor, Size, LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART monitoring). These values are not user-configurable. These items show Not Detected if no IDE/SATA device is installed in the system.

Type [Auto]

Selects the type of SATA drive. Setting this item to [Auto] allows automatic selection of the appropriate SATA device type. Select [CDROM] if you are specifically configuring a CD-ROM drive. Select [ARMD] (ATAPI Removable Media Device) if your device is either a ZIP, LS-120, or MO drive. Configuration options: [Not Installed] [Auto] [CDROM] [ARMD]

This item only appears in the SATA6G_5/6 menus.

LBA/Large Mode [Auto]

Enables or disables the LBA mode. Setting this item to [Auto] enables the LBA mode if the device supports this mode, and if the device was not previously formatted with LBA mode disabled. Configuration options: [Disabled] [Auto]

Block (Multi-Sector Transfer) Mode [Auto]

Enables or disables data multi-sectors transfers. When this item is set to [Auto], the data transfer from and to the device occurs multiple sectors at a time if the device supports multi-sector transfer feature. When this item is set to [Disabled], the data transfer from and to the device occurs one sector at a time. Configuration options: [Disabled] [Auto]

PIO Mode [Auto]

Selects the PIO mode. Configuration options: [Auto] [0] [1] [2] [3] [4]

DMA Mode [Auto]

Selects the DMA mode. Configuration options: [Auto]

SMART Monitoring [Auto]

Sets the Smart Monitoring, Analysis, and Reporting Technology.

Configuration options: [Auto] [Disabled] [Enabled]

32Bit Data Transfer [Enabled]

Enables or disables 32-bit data transfer. Configuration options: [Disabled] [Enabled]

2.3.4 SATA Configuration

The SATA Configuration menu allows you to configure your storage devices. Select an item then press to display the submenu.

OnChip SATA Channel [Enabled]

Enables or disables onboard channel SATA port. Configuration options: [Disabled] [Enabled]

The following two items only appear when you set OnChip SATA Channel to [Enabled].

SATA Port1 - Port4 [IDE]

Allows you to set the SATA configuration.

[IDE] Set to [IDE] when you want to use the Serial ATA hard disk drives as Parallel ATA physical storage devices.

[RAID] Set to [RAID] when you want to create a RAID configuration from the SATA hard disk drives.

[AHCI] Set to [AHCI] when you want the SATA hard disk drives to use the AHCI (Advanced Host Controller Interface). The AHCI allows the onboard storage driver to enable advanced Serial ATA features that increases storage performance on random workloads by allowing the drive to internally optimize the order of commands.

- When this item is set to [AHCI], the information of the SATA connectors 1–6 can be seen only under the OS environment or during POST.

- For Windows XP OS, you have to install the AHCI driver, so that you could use the SATA connectors 1–6 in AHCI mode under the OS environment.

SATA Port5 - Port6 [IDE]

Setting this item to [IDE] instead of [RAID] or [AHCI] allows the system to recognize the optical dirves connected to the SATA connectors 5 or 6 when installing OS.

If you use a SATA optical drive to run the OS installation disk, we strongly recommend that you install the optical drive to the SATA connectors 5/6 and set them to [IDE] mode.

2.3.5 System Information

This menu gives you an overview of the general system specifications. The BIOS automatically detects the items in this menu.

BIOS information

Displays the auto-detected BIOS information.

Processor

Displays the auto-detected CPU specification.

System Memory

Displays the auto-detected system memory.

2.4 Ai Tweaker menu

The Ai Tweaker menu items allow you to configure overclocking-related items.

Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect field values can cause the system to malfunction.

The configuration options for this chapter vary depending on the CPU and DIMM model you installed on the motherboard.

M5A87 BIOS Setup Main Ai Tweaker Advanced Power Boot Tools Exit Version 0302 Configure System Performance Settings Target CPU Frequency : 3000MHz Target DRAM Frequency: 1333MHz CPU Level UP [Auto] CPU OverClocking [Auto] CPU Ratio [Auto] DRAM Frequency [Auto] CPU/NB Frequency [Auto] HT Link Speed [Auto] ▶ DRAM Timing Configuration ▶ DRAM Driving Configuration ********** Please key in numbers directly! ********** CPU & NB Voltage Mode [Offset] CPU Offset Voltage 1.350 [Auto] CPU/NB Offset Voltage 1.100 [Auto] DRAM Voltage 1.500 [Auto] HT Voltage 1.200 [Auto] Warning: this function belongs to overclock- ing, and it may cause instability. Select a CPU level, and the rest will be auto-adjusted. If you want to adjust more, set Ai Overclock Tuner to Manual after you select a CPU level. ↔ Select Screen ↑↓ Select Item +- Change Option F1 General Help F10 Save and Exit ESC Exit v02.61 (C) Copyright 1985-2011, American Megatrends, Inc.

Scroll down to display the following items:

NB Voltage 1.100 [Auto] ************************** CPU Load-Line Calibration [Auto] CPU/NB Load-Line Calibration [Auto] v02.61 (C) Copyright 1985-2011, American Megatrends, Inc.

2.4.1 CPU Level UP [Auto]

Allows you to select a CPU level, and the related parameters will be automatically adjusted according to the selected CPU level. If you want to manually configure the settings in detail, set CPU Overclocking to [Manual] after selecting a CPU level.

Configuration options: [Auto] [Phenom II-955] [Phenom II-3.4G] [Phenom II-3.6G]

• The configuration options vary depending on the CPU model you install on the motherboard.
• The CPU Level UP function support depends on CPU types.

2.4.2 CPU OverClocking [Auto]

Allows you to select the CPU overclocking options to achieve the desired CPU internal frequency. Select any of these preset overclocking configuration options:

Manual Allows you to individually set overclocking parameters.
Auto Loads the optimal settings for the system.
D.O.C.P	Allows you to select a DRAM O.C. profile, and the related parameters will be adjusted automatically.
CPU Level UP	Allows you to select a CPU level, and the related parameters will be adjusted automatically.
Overclock Profile Allows you to select an overclocking profile.
TestMode Allows you to set the overclocking parameter to 5%.

The configuration options for the following sub-items vary depending on the CPU/DIMMs you install on the motherboard.

OC From CPU Level UP [Auto]

This item appears only when you set the CPU OverClocking item to [Manual] and allows you to select a CPU level. The related parameters will be automatically adjusted according to the selected CPU level.

CPU/HT Reference Clcok (MHz) [XXX]

This item appears only when you set the CPU OverClocking item to [Manual] and displays the frequency sent by the clock generator to the system bus and PCI bus. Use the <+> and <-> keys to adjust the CPU Bus frequency. You can also key in the desired frequency using the numeric keypad. The values range from 100MHz to 550MHz.

PCIE Frequency [XXX]

This item appears only when you set the CPU OverClocking item to [Manual] and allows you to set the PCI Express frequency. Use the <+> and <-> keys to adjust the PCIE frequency. You can also key in the desired value using the numeric keypad. The values range from 100MHz to 150MHz.

DRAM O.C. Profile [DDR3-1600MHz]

This item appears only when you set the CPU OverClocking item to [D.O.C.P.] and allows you to select a DRAM O.C. profile, which applies different settings to DRAM frequency, DRAM timing and DRAM voltage. Configuration options: [DDR3-1600MHz] [DDR3-1800MHz] [DDR3-1866MHz] [DDR3-2000MHz]

Profile Info : xxxxMHz-x-x-x-xx

This item appears only when you set the CPU OverClocking item to [D.O.C.P.] and displays the current DRAM profile information. The profile information varies according to the DRAM O.C. Profile you've selected.

Overclock Options [Auto]

This item appears only when you set the CPU OverClocking item to [Overclock Profile] and allows you to select an overclocking profile. Configuration options: [Auto] [Overclock 2%] [Overclock 5%] [Overclock 8%] [Overclock 10%]

2.4.3 CPU Ratio [Auto]

Allows you to set the ratio between the CPU Core Clock and the FSB Frequency. Use the <+> and <-> keys to adjust the ratio. The valid value ranges vary according to your CPU model.

The following two items only appear when you install a 6-core CPU.

AMD Turbo CORE technology [Enabled]

Enables or disables the AMD Turbo Core technology. Configuration options: [Disabled] [Enabled]

Turbo CORE Ratio [Auto]

Sets the Turbo Core ratio. Use the <+> / <-> keys to adjust the ratio. The valid value ranges vary depending on your CPU model. Configuration options: [Auto]

2.4.4 DRAM Frequency [Auto]

Allows you to set the DDR3 operating frequency. Configuration options: [Auto] [800MHz] [1067MHz] [1333MHz] [1600MHz]

Selecting a very high DRAM frequency may cause the system to become unstable! If this happens, revert to the default setting.

2.4.5 CPU/NB Frequency [Auto]

Allows you to set the ratio between the NB Clock and the CPU Bus Frequency. Configuration options: [Auto] [1400MHz] [1600MHz] [1800MHz] [2000MHz]

2.4.6 HT Link Speed [Auto]

Allows you to select the HyperTransport link speed. Configuration options: [Auto] [200MHz] [400MHz] [600MHz] [800MHz] [1000MHz] [1200MHz] [1400MHz] [1600MHz] [1800MHz] [2000MHz]

2.4.7 DRAM Timing Configuration

The configuration options for some of the following items vary depending on the DIMMs you install on the motherboard.

DRAM CAS# Latency [Auto]

Configuration options: [Auto] [4 CLK] \~ [12 CLK]

DRAM RAS# to CAS# Delay [Auto]

Configuration options: [Auto] [5 CLK] \~ [12 CLK]

DRAM RAS# PRE Time [Auto]

Configuration options: [Auto] [5 CLK] \~ [12 CLK]

DRAM RAS# ACT Time [Auto]

Configuration options: [Auto] [15 CLK] \~ [30 CLK]

DRAM READ to PRE Time [Auto]

Configuration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]

DRAM Row Cycle Time [Auto]

Configuration options: [Auto] [11 CLK] \~ [41 CLK]

DRAM WRITE Recovery Time [Auto]

Configuration options: [Auto] [5 CLK] [6 CLK] [7 CLK] [8 CLK] [10 CLK] [12 CLK]

DRAM RAS# to RAS# Delay [Auto]

Configuration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]

DRAM READ to WRITE Delay [Auto]

Configuration options: [Auto] [3 CLK] \~ [17 CLK]

DRAM WRITE to READ Delay(DD) [Auto]

Configuration options: [Auto] [2 CLK] \~ [10 CLK]

DRAM WRITE to READ Delay(SD) [Auto]

Configuration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]

DRAM WRITE to WRITE Timing [Auto]

Configuration options: [Auto] [3 CLK] \~ [10 CLK]

DRAM READ to READ Timing [Auto]

Configuration options: [Auto] [3 CLK] \~ [10 CLK]

DRAM REF Cycle Time [Auto]

Configuration options: [Auto] [90ns] [110ns] [160ns] [300ns] [350ns]

DRAM Refresh Rate [Auto]

Configuration options: [Auto] [Every 7.8ms] [Every 3.9ms]

DRAM Command Rate [Auto]

Configuration options: [Auto] [1T] [2T]

2.4.8 DRAM Driving Configuration

The configuration options for some of the following items vary depending on the DIMMs you install on the motherboard.

CKE drive strength [Auto]

Configuration options: [Auto] [1x] [1.25x] [1.5x] [2x]

CS/ODT drive strength [Auto]

Configuration options: [Auto] [1x] [1.25x] [1.5x] [2x]

ADDR/CMD drive strength [Auto]

Configuration options: [Auto] [1x] [1.25x] [1.5x] [2x]

MEMCLK drive strength [Auto]

Configuration options: [Auto] [0.75x] [1x] [1.25x] [1.5x]

Data drive strength [Auto]

Configuration options: [Auto] [0.75x] [1x] [1.25x] [1.5x]

Configuration options: [Auto] [0.75x] [1x] [1.25x] [1.5x]

Processor ODT [Auto]

Configuration options: [Auto] [240 ohms +/- 20%] [120 ohms +/- 20%] [60 ohms +/- 20%]

Some of the following items are adjusted by typing the desired values using the numeric keypad and press the key. You can also use the <+> and <-> keys to adjust the value. To restore the default setting, type [auto] using the keyboard and press the key.

2.4.9 CPU & NB Voltage Mode [Offset]

Allows you to set the CPU & CPU/NB Voltage Mode. Different sub-items appear according to the CPU & NB Voltage Mode item setting. Configuration options: [Offset] [Manual]

CPU Offset Voltage [Auto]

This item appears only when you set the CPU & NB Voltage Mode item to [Offset] and allows you to set the CPU Offset voltage. The values range from 0.003125V to 0.500000V with a 0.003125V interval.

CPU/NB Offset Voltage [Auto]

This item appears only when you set the CPU & NB Voltage Mode item to [Offset] and allows you to set the CPU/NB Offset voltage. The values range from 0.003125V to 0.500000V with a 0.003125V interval.

CPU Voltage [Auto]

This item appears only when you set the CPU & NB Voltage Mode item to [Manual] and allows you to set a fixed CPU voltage.

CPU/NB Voltage [Auto]

This item appears only when you set the CPU & NB Voltage Mode item to [Manual] and allows you to set a fixed CPU/NB voltage.

2.4.10 DRAM Voltage [Auto]

Allows you to set the DRAM voltage. The values range from 1.35000V to 2.30000V with a 0.01000V interval.

2.4.11 HT Voltage [Auto]

Allows you to set the HyperTransport voltage. The values range from 1.20000V to 1.38000V with a 0.01000V interval.

2.4.12 NB Voltage [Auto]

Allows you to set the Northbridge voltage. The values range from 1.10000V to 1.60000V with a 0.01000V interval.

2.4.13 CPU Load-Line Calibration [Auto]

Allows you to select the CPU Load-Line mode.

Configuration options: [Auto] [Disabled] [Enabled]

2.4.14 CPU/NB Load-Line Calibration [Auto]

Allows you to select the CPU/NB Load-Line mode.

Configuration options: [Auto] [Disabled] [Enabled]

2.5 Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system devices.

Take caution when changing the settings of the Advanced menu items. Incorrect field values can cause the system to malfunction.

M5A87 BIOS Setup Version 0302 Main Ai Tweaker Advanced Power Boot Tools Exit Advanced Settings ► CPU Configuration ► Chipset ► Onboard Devices Configuration ► PCIPnP ► USB Configuration Configure CPU. ←→ Select Screen ↑↑ Select Item +- Change Field Tab Select Field F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.

2.5.1 CPU Configuration

The items in this menu show the CPU-related information that the BIOS automatically detects.

GART Error Reporting [Disabled]

This option should remain disabled for the normal operation. The driver developer may enable it for testing purpose. Configuration options: [Disabled] [Enabled]

Microcode Updation [Enabled]

Enables or disables Microcode Updation. Configuration options: [Disabled] [Enabled]

Secure Virtual Machine Mode [Disabled]

Enables or disables Secure Virtual Machine Mode (SVM) Configuration options: [Disabled] [Enabled]

Cool 'n' Quiet [Enabled]

Enables or disables the AMD Cool 'n' Quiet technology. Configuration options: [Enabled] [Disabled]

ACPI SRAT Table [Enabled]

Enables or disables the building of ACPI SRAT table. Configuration options: [Enabled] [Disabled]

C1E Support [Disabled]

Enables or disables the CPU Enhanced Halt (C1E) function, a CPU power-saving function in system halt state. When this item is enabled, the CPU core frequency and voltage will be reduced during the system halt state to decrease power consumption.

Configuration options: [Disabled] [Enabled]

ASUS Core Unlocker [Disabled]

Enables the ASUS Core Unlocker to get the full computing power of the processor. Select [Disabled] to disable this function. Configuration options: [Enabled] [Disabled]

CPU Core Activation [Auto]

Allows you to set the active CPU cores. Configuration options: [Auto] [Manual]

The following items appear only when you set CPU Core Activation to [Manual].

2nd Core [On]
Enables or disables the second CPU core. Configuration options: [On] [Off]
3rd Core [On]
Enables or disables the third CPU core. Configuration options: [On] [Off]
4th Core [On]
Enables or disables the fourth CPU core. Configuration options: [On] [Off]

2.5.2 Chipset

NorthBridge Configuration

DRAM Controller Configuration

Bank Interleaving [Auto] Allows you to enable the bank memory interleaving. Configuration options: [Disabled] [Auto]

Channel Interleaving [Auto]

Allows you to enable the channel memory interleaving.

Configuration options: [Disabled] [Address bits 6] [Address bits 12] [Auto]

[XOR of Address bits [20:16, 6]] [XOR of Address bits [20:16, 9]]

Enable Clock to All DIMMs [Disabled]

Enables unused Clocks to DIMMs even though memory slots are not populated. Configuraiton options: [Enabled] [Disabled]

MemClk Tristate C3/ATLVID [Disabled]

Allows you to enable or disable MemClk Tri-Stating during C3 and Alt VID.

Configuration options: [Disabled] [Enabled]

Memory Hole Remapping [Enabled]

Allows you to enable or disable memory remapping around memory hole.

Configuration options: [Disabled] [Enabled]

DCT Unganged Mode [Always]

Allows you to select the unganged DRAM mode (64-bit width).

Configuration options: [Auto] [Always]

Power Down Enable [Disabled]

Allows you to enable or disable DDR power down mode.

Configuration options: [Disabled] [Enabled]

ECC Configuration

ECC Mode [Disabled]

Enables or disables the DRAM ECC that allows the hardware to report and correct memory errors automatically. Configuration options: [Disabled] [Basic] [Good] [Super] [Max] [User]

Internal Graphics

Primary Display Adapter [GFX-GPP-PCI]

Selects the primary display adapter. Configuration options: [GFX-GPP-PCI] [GPP-GFX-PCI] [PCI-GFX-GPP]

GFX: primary video controller on a PCIe x16 slot

GPP: primary video controller on a PCIe x1 slot

PCI: primary video controller on a PCI slot

2.5.3 Onboard Devices Configuration

Serial Port1 Address [3F8/IRQ4]

Allows you to select the Serial Port1 base address. Configuration options: [Disabled] [3F8/IRQ4] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]

Parallel Port Address [378]

Allows you to select the Parallel Port base addresses. Configuration options: [Disabled] [378] [278] [3BC]

Parallel Port Mode [Normal]

Allows you to select the Parallel Port mode. Configuration options: [Normal] [EPP] [ECP] [EPP+ECP]

Parallel Port IRQ [IRQ7]

Configuration options: [IRQ5] [IRQ7]

HDAudio Controller [Enabled]

Enables or disables the high definition audio controller. Configuration options: [Disabled] [Enabled]

Front Panel Select [HD Audio]

Configuration options: [AC97] [HD Audio]

OnBoard LAN Controller [Enabled]

Configuration options: [Disabled] [Enabled]

OnBoard LAN Boot ROM [Disabled]

Configuration options: [Disabled] [Enabled]

USB3.0 Controller [Enabled]

Enables and disables the USB 3.0 controller. Configuration options: [Disabled] [Enabled]

2.5.4 PCIPnP

The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices. The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA devices, and setting the memory size block for legacy ISA devices.

Take caution when changing the settings of the PCI PnP menu items. Incorrect field values can cause the system to malfunction.

Plug and Play O/S [No]

When this item is set to [No], BIOS configures all the devices in the system. When this item is set to [Yes] and if you install a Plug and Play operating system, the operating system configures the Plug and Play devices not required for boot. Configuration options: [No] [Yes]

2.5.5 USB Configuration

The items in this menu allows you to change the USB-related features. Select an item then press to display the configuration options.

The Module Version and USB Devices Enabled items show the auto-detected values. If no USB device is detected, the item shows None.

USB Functions [Enabled]

Allows you to enable or disable the USB functions. Configuration options: [Disabled] [Enabled]

Legacy USB Support [Auto]

Allows you to enable or disable support for Legacy USB storage devices, including USB flash drives and USB hard drives. Setting to Auto allows the system to detect the presence of USB devices at startup. If detected, the USB controller legacy mode is enabled. If no USB device is detected, the legacy USB support is disabled. Configuration options: [Disabled] [Enabled] [Auto]

USB 2.0 Controller Mode [HiSpeed]

Allows you to configure the USB 2.0 controller in HiSpeed (480Mbps) or Full Speed (12Mbps). Configuration options: [FullSpeed] [HiSpeed]

The following items only appear when a USB storage device is plugged in.

USB Mass Storage Device Configuration

USB Mass Storage Reset Delay [20 Sec]

Sets the maximum time that the BIOS waits for the USB storage device to initialize.

Configuration options: [10 Sec] [20 Sec] [30 Sec] [40 Sec]

Emulation Type [Auto]

Allows you to set the emulation type. Configuration options: [Auto] [Floppy]

[Forced FDD] [Hard Disk] [CDROM]

2.6 Power menu

The Power menu items allow you to change the settings for the Advanced Configuration and Power Interface (ACPI) and the Advanced Power Management (APM). Select an item then press to display the configuration options.

M5A87 BIOS Setup Version 0302 Main Ai Tweaker Advanced Power Boot Tools Exit Power Settings Suspend Mode [Auto] ACPI 2.0 Support [Enabled] ACPI APIC Support [Enabled] ► APM Configuration ► HW Monitor Configuration Anti Surge Support [Enabled] Select the ACPI state used for System Suspend. ←→ Select Screen ↑↑ Select Item +- Change Option F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.

2.6.1 Suspend Mode [Auto]

Allows you to select the Advanced Configuration and Power Interface (ACPI) state to be used for system suspend. Configuration options: [S1 (POS) Only] [S3 Only] [Auto]

2.6.2 ACPI 2.0 Support [Enabled]

Allows you to enable or disable the Advanced Configuration and Power Interface (ACPI) 2.0 support. Configuration options: [Disabled] [Enabled]

2.6.3 ACPI APIC Support [Enabled]

Allows you to enable or disable the Advanced Configuration and Power Interface (ACPI) support in the Advanced Programmable Interrupt Controller (APIC). When set to Enabled, the ACPI APIC table pointer is included in the RSDT pointer list. Configuration options: [Disabled] [Enabled]

2.6.4 APM Configuration

Restore on AC Power Loss [Power Off]

When this item is set to [Power Off], the system goes into off state after an AC power loss. When this item is set to [Power On], the system goes on after an AC power loss. When this item set to [Last State], the system goes into either off or on state, whatever the system state was before the AC power loss. Configuration options: [Power Off] [Power On] [Last State]

Power on From S5 By PME# [Disabled]

Enables or disables PME wake from sleep states. Configuration options: [Disabled] [Enabled]

Power on From S5 By Ring [Disabled]

Enables or disables ring to generate a wake event. Configuration options: [Disabled] [Enabled]

Power on By PS/2 Keyboard [Disabled]

Enables or disables PS/2 Keyboard to generate a wake event.

Configuration options: [Disabled] [Space Bar] [Power Key] [Ctrl-Esc]

Power On By PS/2 Mouse [Disabled]

When set to [Enabled], this parameter allows you to use the PS/2 mouse to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]

Power on From S5 By RTC Alarm [Disabled]

Enables or disables RTC to generate a wake event. Configuration options: [Disabled] [Enabled]

2.6.5 HW Monitor Configuration

CPU Temperature [xxx°C/xxx°F] or [Ignored]

MB Temperature [xxx°C/xxx°F] or [Ignored]

The onboard hardware monitor automatically detects and displays the motherboard and CPU temperatures. Select Ignored if you do not wish to display the detected temperatures.

CPU / Chassis / Power Fan Speed [N/A], [xxxxRPM], or [Ignored]

The onboard hardware monitor automatically detects and displays the CPU / Chassis / Power fan speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the field shows N/A. Select [ignored] if you do not want the detected speed to be displayed.

VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xx.xxxV] or [Ignored]

The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators.

CPU Q-Fan Function [Enabled]

Enables or disables the ASUS Q-Fan feature that smartly adjusts the CPU fan speeds for more efficient system operation. Configuration options: [Disabled] [Enabled]

The following item appears only when you set CPU Q-Fan Function to [Enabled].

CPU Fan Speed Low Limit [200 RPM]

Allows you to manually set a lower limit for the CPU fan speed. If the CPU fan speed is below the specified limit, the system sends out warning beeps. Configuration options: [500 RPM] [400 RPM] [300 RPM] [200 RPM] [100 RPM] [Ignored]

CPU Q-Fan Mode [Standard]

Allows you to set the appropriate performance level of the CPU fan.

[Standard] Sets to [Standard] to make the CPU fan automatically adjust depending on the CPU temperature.

[Silent] Sets to [Silent] to minimize the fan speed for quiet CPU fan operation.

[Turbo] Set to [Turbo] to achieve maximum CPU fan speed.

[Manual] Allows you to individually set the CPU fan parameters.

2.6.6 Anti Surge Support [Enabled]

Allows you to enable or disable the Anti-Surge protection feature.

Configuration options: [Disabled] [Enabled]

2.7 Boot menu

The Boot menu items allow you to change the system boot options. Select an item then press to display the submenu.

M5A87 BIOS Setup Version 0302 Main Ai Tweaker Advanced Power Boot Tools Exit Boot Settings ► Boot Device Priority ► Boot Settings Configuration ► Security Specifies the Boot Device Priority sequence. A virtual floppy disk drive (Floppy Drive B:) may appear when you set the CD-ROM drive as the first boot device. ←→ Select Screen ↑↓ Select Item Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.

2.7.1 Boot Device Priority

1st \~ xxth Boot Device

These items specify the boot device priority sequence from the available devices. The number of device items that appears on the screen depends on the number of devices installed in the system. Configuration options: [Removable Dev.] [Hard Drive] [ATAPI CD-ROM] [Disabled]

- To select the boot device during system startup, press when ASUS logo appears.

- To access Windows OS in Safe Mode, do any of the following:

• Press when ASUS logo appears.
• Press after POST.

2.7.2 Boot Settings Configuration

Quick Boot [Enabled]

Enabling this item allows the BIOS to skip some power on self tests (POST) while booting to decrease the time needed to boot the system. When this item is set to [Disabled], BIOS performs all the POST items. Configuration options: [Disabled] [Enabled]

Full Screen Logo [Enabled]

Enables or disables the full screen logo display feature. Configuration options: [Disabled] [Enabled]

Set this item to [Enabled] to use the ASUS MyLogo2™ feature.

AddOn ROM Display Mode [Force BIOS]

Sets the display mode for option ROM. Configuration options: [Force BIOS] [Keep Current]

Bootup Num-Lock [On]

Selects the power-on state for the NumLock. Configuration options: [Off] [On]

Wait for 'F1' If Error [Enabled]

When this item is set to [Enabled], the system waits for the F1 key to be pressed when error occurs. Configuration options: [Disabled] [Enabled]

Hit 'DEL' Message Display [Enabled]

When this item is set to [Enabled], the system displays the message Press DEL to run Setup during POST. Configuration options: [Disabled] [Enabled]

2.7.3 Security

The Security menu items allow you to change the system security settings. Select an item then press to display the configuration options.

Change Supervisor Password

Select this item to set or change the supervisor password. The Supervisor Password item on top of the screen shows the default Not Installed. After you set a password, this item shows Installed.

To set a Supervisor Password:

1. Select the Change Supervisor Password item and press .

2. On the password box, key in a password containing up to six letters, or numbers, or both, then press .

3. Confirm the password when prompted.

The message Password Installed appears after you successfully set your password. To change the supervisor password, follow the same steps as in setting a supervisor password.

To clear the supervisor password, select the Change Supervisor Password then press twice. The message Password uninstalled appears.

If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock (RTC) RAM. See section 1.9 Jumpers for information on how to erase the RTC RAM.

After you have set a supervisor password, the other items appear to allow you to change other security settings.

User Access Level [Full Access]

This item allows you to select the access restriction to the Setup items. Configuration options: [No Access] [View Only] [Limited] [Full Access]

No Access prevents user access to the Setup utility. View Only allows access but does not allow change to any field. Limited allows changes only to selected fields, such as Date and Time. Full Access allows viewing and changing all the fields in the Setup utility.

Change User Password

Select this item to set or change the user password. The User Password item on top of the screen shows the default Not Installed. After you set a password, this item shows Installed. To set a User Password:

1. Select the Change User Password item and press .
2. On the password box, key in a password containing up to six letters, or numbers, or both, then press .
3. Confirm the password when prompted.

The message "Password Installed" appears after you set your password successfully. To change the user password, follow the same steps as in setting a user password.

Clear User Password

Select this item to clear the user password.

Password Check [Setup]

When set to [Setup], BIOS checks for user password when accessing the Setup utility. When set to [Always], BIOS checks for user password both when accessing Setup and booting the system. Configuration options: [Setup] [Always]

2.8 Tools menu

The Tools menu items allow you to configure options for special functions. Select an item then press to display the sub-menu.

Main Advanced Power Boot Tools Exit M5A87 BIOS Setup Version 0302 Tools Settings ASUS EZ Flash 2 ► ASUS O.C. Profile Press ENTER to run the utility to select and update BIOS. This utility supports: 1.FAT 12/16/32 (r/w) 2.NTFS (read only) 3.CD-DISC (read only) ←→ Select Screen ↑↑ Select Item Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.

2.8.1 ASUS EZ Flash 2

Allows you to run ASUS EZ Flash 2. When you press , a confirmation message appears. Use the left/right arrow key to select between [Yes] or [No], then press to confirm your choice. See section 2.1.2 for details.

2.8.2 ASUS O.C. Profile

This item allows you to store or load multiple BIOS settings.

Add Your CMOS Profile

Allows you to save the current BIOS file to the BIOS Flash. In the Name sub-item, key in your profile name and press , and then choose a profile number to save your CMOS settings in the Save to sub-item.

Load CMOS Profiles.

Allows you to load the previous BIOS settings saved in the BIOS Flash. Press to load the file.

Start O.C. Profile

Allows you to run the utility to save and load CMOS. Press to run the utility.

• This function can support devices such as a USB flash disk with FAT 32/16 format and single partition only.
• DO NOT shut down or reset the system while updating the BIOS to prevent the system boot failure!
  • We recommend that you update the BIOS file only coming from the same memory/CPU configuration and BIOS version.
• Only the CMO file can be loaded.

2.9 Exit menu

The Exit menu items allow you to load the optimal or failsafe default values for the BIOS items, and save or discard your changes to the BIOS items.

M5A87 BIOS Setup Main Advanced Power Boot Tools Exit Version 0302 Exit Options Exit & Save Changes Exit & Discard Changes Discard Changes Load Setup Defaults Exit system setup after saving the cahnges. F10 key can be used for this operation.

Pressing does not immediately exit this menu. Select one of the options from this menu or from the legend bar to exit.

Exit & Save Changes

Once you are finished making your selections, choose this option from the Exit menu to ensure the values you selected are saved to the CMOS RAM. An onboard backup battery sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this option, a confirmation window appears. Select OK to save changes and exit.

Exit & Discard Changes

Select this option only if you do not want to save the changes that you made to the Setup program. If you made changes to fields other than System Date, System Time, and Password, the BIOS asks for a confirmation before exiting.

Discard Changes

This option allows you to discard the selections you made and restore the previously saved values. After selecting this option, a confirmation appears. Select OK to discard any changes and load the previously saved values.

Load Setup Defaults

This option allows you to load the default values for each of the parameters on the Setup menus. When you select this option or if you press , a confirmation window appears. Select OK to load default values. Select Exit & Save Changes or make other changes before saving the values to the non-volatile RAM.

ASUS contact information

ASUSTeK COMPUTER INC.

Address 15 Li-Te Road, Peitou, Taipei, Taiwan 11259

Telephone [phone]

Fax [phone]

E-mail [e-mail]

Online support support.asus.com

ASUS COMPUTER INTERNATIONAL (America)

Address 800 Corporate Way, Fremont, CA 94539, USA

Telephone [phone]

Fax [phone]

Web site usa.asus.com

Technical Support

Telephone [phone]

Support fax [phone]

Online support support.asus.com

ASUS COMPUTER GmbH (Germany and Austria)

Address Harkort Str. 21-23, D-40880 Ratingen, Germany

Fax [phone]

Web site www.asus.de

Online support support.asus.com

* EUR 0.14/minute from a German fixed landline; EUR 0.42/minute from a mobile phone.

DECLARATION OF CONFORMITY

Per FCC Part 2 Section 2. 1077(a)

Responsible Party Name: Asus Computer International

Address: 800 Corporate Way, Fremont, CA 94539.

'hone/Fax No: [phone]/[phone]

hereby declares that the product

Product Name : MotherBoard

Model Number : M5A87

Conforms to the following specifications:

☒ FCC Part 15, Subpart B, Unintentional Radiators

☐ FCC Part 15, Subpart C, Intentional Radiators

☐ FCC Part 15, Subpart E, Intentional Radiators

Supplementary Information:

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Representative Person's Name: Steve Chang / President

Steve Chang

Date : Mar. 15, 2011

Declaration Date: Mar. 15, 2011

Year to begin affixing CE marking:2011

CE marking

Signature
Position : CEO
Name: Jerry Shen
(1)基因通过控制 通过控制
(
(EC conformity marking)
(EC conformity marking)
Position : CEO
Name: Jerry
m = 311

Declaration Date: Mar. 15, 2011

Year to begin affixing CE marking:2011

EC Declaration of Conformity