A520M-ITX/ac - Motherboard ASROCK - Free user manual and instructions

Product Type	Mini-ITX Motherboard
Dimensions	17 x 17 cm (Mini-ITX form factor)
Required Power Supply	ATX 24-pin + 12V 8-pin
Processor Socket	AM4
Supported Processors	AMD Ryzen 3000, 4000 series and next generation (except Ryzen 5 3400G and Ryzen 3 3200G)
Chipset	AMD A520
RAM Memory	2 x DDR4 DIMM, dual channel, max 64 GB, up to 4600+ MHz (OC)
Expansion Slots	1 x PCIe 3.0 x16, 1 x vertical M.2 (Wi-Fi)
Integrated Graphics	Via AMD Radeon Vega APU, outputs HDMI 2.1 and DisplayPort 1.4
Audio	Realtek ALC887, 7.1 HD channels
Networking	Realtek RTL8111H Gigabit LAN, Wi-Fi 802.11ac + Bluetooth 4.2
Storage	4 x SATA3 6 Gb/s, 1 x Ultra M.2 (PCIe Gen3 x4 or SATA3)
USB Connectors	2 x USB 2.0, 3 x USB 3.2 Gen1 Type-A, 1 x USB 3.2 Gen1 Type-C (rear panel)
BIOS	AMI UEFI, graphical support, Plug and Play, ACPI 5.1
Supported Operating System	Windows 10 64-bit
Certifications	FCC, CE, ErP/EuP Ready
Fan Connectors	1 x CPU (4-pin), 2 x chassis/pump (4-pin)
RGB Lighting	1 x RGB LED header (12V), 1 x addressable LED header (5V)

Frequently Asked Questions - A520M-ITX/ac ASROCK

Which processors are compatible with the A520M-ITX/ac motherboard?

The motherboard supports AMD Ryzen 3000 and 4000 series processors (Matisse and Renoir architecture) as well as upcoming generations on socket AM4. However, Ryzen 5 3400G and Ryzen 3 3200G models are not compatible.

What is the maximum supported memory capacity?

The motherboard supports up to 64 GB of DDR4 memory in dual channel configuration, with frequencies up to 4600+ MHz when overclocking.

Does the motherboard have an M.2 slot?

Yes, it has an Ultra M.2 socket (M2_1) compatible with M.2 SATA3 or PCIe Gen3 x4 modules, in 2280 format. It supports NVMe SSDs as boot drive.

Is Wi-Fi integrated?

Yes, the motherboard comes with an Intel Wi-Fi 802.11ac module, supporting 2.4GHz and 5GHz bands, as well as Bluetooth 4.2.

What video outputs are available?

The motherboard offers an HDMI 2.1 port (4K @ 60 Hz) and a DisplayPort 1.4 port (5K @ 120 Hz), enabling dual graphics output via the integrated AMD Radeon Vega APUs.

What power supply is required for this motherboard?

It requires a standard ATX power supply with a 24-pin main connector and a 8-pin 12V CPU connector. A quality power supply is recommended for stability.

Does the motherboard support RAID?

Yes, the SATA3 ports support RAID 0, RAID 1, and RAID 10 configurations, as well as NCQ, AHCI, and hot-plugging.

Is the BIOS easy to use?

The AMI UEFI BIOS features an intuitive graphical interface, supports Plug and Play, and allows fine-tuning of voltages (CPU, DRAM, etc.) and fan speeds.

What operating system is supported?

The motherboard is compatible with Windows 10 64-bit. 32-bit versions are not supported.

What is the warranty period for the motherboard?

The standard warranty for ASRock motherboards is generally 3 years from the purchase date, subject to the reseller's conditions. Please check ASRock website for details.

USER MANUAL A520M-ITX/ac ASROCK

Copyright©2020 ASRock INC. All rights reserved.

Copyright Notice:

No part of this documentation may be reproduced, transcribed, transmitted, or translated in any language, in any form or by any means, except duplication of documentation by the purchaser for backup purpose, without written consent of ASRock Inc.

Products and corporate names appearing in this documentation may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners' benefit, without intent to infringe.

Disclaimer:

Specifications and information contained in this documentation are furnished for informational use only and subject to change without notice, and should not be constructed as a commitment by ASRock. ASRock assumes no responsibility for any errors or omissions that may appear in this documentation.

With respect to the contents of this documentation, ASRock does not provide warranty of any kind, either expressed or implied, including but not limited to the implied warranties or conditions of merchantability or fitness for a particular purpose.

In no event shall ASRock, its directors, officers, employees, or agents be liable for any indirect, special, incidental, or consequential damages (including damages for loss of profits, loss of business, loss of data, interruption of business and the like), even if ASRock has been advised of the possibility of such damages arising from any defect or error in the documentation or product.

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.

CALIFORNIA, USA ONLY

The Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance controlled in Perchlorate Best Management Practices (BMP) regulations passed by the California Legislature. When you discard the Lithium battery in California, USA, please follow the related regulations in advance.

"Perchlorate Material-special handling may apply, see www.dtsc.ca.gov/hazardouswaste/perchlorate"

ASRock Website: http://www.asrock.com

AUSTRALIA ONLY

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage caused by our goods. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. If you require assistance please call ASRock Tel : [phone] ext.123 (Standard International call charges apply)

The terms HDMI ^® and HDMI High-Definition Multimedia Interface, and the HDMI logo are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.

CE Warning

This device complies with directive 2014/53/EU issued by the Commission of the European Community.

This equipment complies with EU radiation exposure limits set forth for an uncontrolled environment.

This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Operations in the 5.15-5.35GHz band are restricted to indoor usage only.

	AT	BE	BG	CH	CY	CZ	DE
	DK	EE	EL	ES	FI	FR	HR
	HU	IE	IS	IT	LI	LT	LU
	LV	MT	NL	NO	PL	PT	RO
	SE	SI	SK	TR	UK

Radio transmit power per transceiver type

Function Frequency Maximum Output Power (EIRP)

	2400-2483.5 MHz 18.5 + / -1.5 dbm
	5150-5250 MHz 21.5 + / -1.5 dbm
WiFi	5250-5350 MHz	18.5 + / -1.5 dbm (no TPC)
		21.5 + / -1.5 dbm (TPC)
	5470-5725 MHz	25.5 + / -1.5 dbm (no TPC)
		28.5 + / -1.5 dbm (TPC)

Bluetooth 2400-2483.5 MHz 8.5 + / -1.5 dbm

Motherboard Layout

No. Description

1 CPU Fan Connector (CPU_FAN1)
2 Addressable LED Header (ADDR_LED1)
3 RGB LED Header (RGB_LED1)
4 Chassis/Water Pump Fan Connector (CHA_FAN1/WP)
5 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
6 ATX Power Connector (ATXPWR1)
7 SATA3 Connectors (SATA3_1_3)
8 SATA3 Connectors (SATA3_2_4)
9 USB 3.2 Gen1 Header (USB3_4_5)
10 System Panel Header (PANEL1)
11 USB 2.0 Header (USB_3_4)
12 Clear CMOS Jumper (CLRCMOS1)
13 Chassis/Water Pump Fan Connector (CHA_FAN2/WP)
14 Chassis Speaker Header (SPEAKER1)
15 Front Panel Audio Header (HD_AUDIO1)
16 ATX 12V Power Connector (ATX12V1)

I/O Panel

No. Description No. Description

1 USB 2.0 Ports (USB_12)* 7 USB 3.2 Gen1 Type-A Port (USB3_3)
2 LAN RJ-45 Port** 8 USB 3.2 Gen1 Type-C Port (USB3_TC_1)
3 Line In (Light Blue)*** 9 PS/2 Mouse/Keyboard Port
4 Front Speaker (Lime)*** 10 USB 3.2 Gen1 Type-A Port (USB3_1_2)
5 Antenna Ports 11 DisplayPort 1.4
6 Microphone (Pink)*** 12 HDMI Port

Activity / Link LED		Speed LED
Status	Description	Status	Description
Off	No Link	Off	10Mbps connection
Blinking	Data Activity	Orange	100Mbps connection
On	Link	Green	1Gbps connection

*** Function of the Audio Ports in 7.1-channel Configuration:

Port Function

Light Blue (Rear panel) Rear Speaker Out
Lime (Rear panel) Front Speaker Out
Pink (Rear panel) Central /Subwoofer Speaker Out
Lime (Front panel) Side Speaker Out

WiFi-802.11ac Module and ASRock WiFi 2.4/5 GHz Antennas

WiFi-802.11ac + BT Module

This motherboard comes with an exclusive WiFi 802.11 a/b/g/n/ac + BT v4.2 module (pre-installed on the rear I/O panel) that offers support for WiFi 802.11 a/b/g/n/ac connectivity standards and Bluetooth v4.2. WiFi + BT module is an easy-to-use wireless local area network (WLAN) adapter to support WiFi + BT. Bluetooth v4.2 standard features Smart Ready technology that adds a whole new class of functionality into the mobile devices. BT 4.2 also includes Low Energy Technology and ensures extraordinary low power consumption for PCs.

* The transmission speed may vary according to the environment.

WiFi Antennas Installation Guide

Two identical cylindrical objects with segmented ends, no text or symbols visible

Technical line drawing of a mechanical assembly with two cylindrical components mounted on a base (no text or symbols)

Mechanical assembly diagram showing a lever mechanism with rotating components (no text or labels)

Step 1

Prepare the WiFi 2.4/5 GHz Antennas that come with the package.

Step 2

Connect the two WiFi 2.4/5 GHz Antennas to the antenna connectors. Turn the antenna clockwise until it is securely connected.

Step 3

Set the WiFi 2.4/5 GHz Antenna as shown in the illustration.

*You may need to adjust the direction of the antenna for a stronger signal.

Chapter 1 Introduction

Thank you for purchasing ASRock A520M-ITX/ac motherboard, a reliable motherboard produced under ASRock's consistently stringent quality control. It delivers excellent performance with robust design conforming to ASRock's commitment to quality and endurance.

Because the motherboard specifications and the BIOS software might be updated, the content of this documentation will be subject to change without notice. In case any modifications of this documentation occur, the updated version will be available on ASRock's website without further notice. If you require technical support related to this motherboard, please visit our website for specific information about the model you are using. You may find the latest VGA cards and CPU support list on ASRock's website as well. ASRock website http://www.asrock.com.

1.1 Package Contents

• ASRock A520M-ITX/ac Motherboard (Mini-ITX Form Factor)
• ASRock A520M-ITX/ac Quick Installation Guide
• ASRock A520M-ITX/ac Support CD
• 1 x I/O Panel Shield
• 2 x Serial ATA (SATA) Data Cables (Optional)
• 2 x ASRock WiFi 2.4/5 GHz Antennas (Optional)

1.2 Specifications

Platform	Mini-ITX Form FactorSolid Capacitor design
CPU	Supports 3^rd Gen AMD AM4 RyzenTM / future AMD RyzenTM Processors (3000 and 4000 Series Processors)*Not compatible with AMD RyzenTM 5 3400G and RyzenTM 3 3200G.Digi Power design8 Power Phase design
Chipset	AMD A520
Memory	Dual Channel DDR4 Memory Technology2 x DDR4 DIMM SlotsAMD Ryzen series CPUs (Matisse) support DDR4 4600+ (OC)/4533(OC)/4466(OC)/4400(OC)/4333(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000(OC)/3866(OC)/3800 (OC)/3733(OC)/3600(OC)/3466(OC)/3200/2933/2667/2400/2133 ECC & non-ECC, un-buffered memory*AMD Ryzen series APUs (Renoir) support DDR4 4733+(OC)/4666(OC)/4600(OC)/4533(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000 (OC)/3866(OC)/3800(OC)/3733(OC)/3600(OC)/3466 (OC)/3200/2933/2667/2400/2133 ECC & non-ECC, un-buffered memory** Please refer to Memory Support List on ASRock's website for more information. (http://www.asrock.com/)* Please refer to page 24 for DDR4 UDIMM maximum frequency support.Max. capacity of system memory: 64GBSupports Extreme Memory Profile (XMP) memory modules15μ Gold Contact in DIMM Slots

Expansion

Slot

- 1 x PCI Express 3.0 x16 Slot (PCIE1: x16 mode)*

* AMD Ryzen series CPUs (Matisse) supports PCIe riser cards to extend x8/x8 slots

* Supports NVMe SSD as boot disks

- 1 x Vertical M.2 Socket (Key E) with the bundled WiFi-802.11ac module (on the rear I/O)

Graphics

- Integrated AMD Radeon ^TM Vega Series Graphics in Ryzen Series APU*

* Actual support may vary by CPU

- DirectX 12, Pixel Shader 5.0

- Shared memory default 2GB. Max Shared memory supports up to 16GB.

* The Max shared memory 16GB requires 32GB system memory installed.

- Dual graphics output: support HDMI and DisplayPort 1.4 ports by independent display controllers

- Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz

- Supports DisplayPort 1.4 Input with max. resolution up to 5K (5120x2880)@120Hz

- Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 2.1 Port (Compliant HDMI monitor is required)

• Supports HDR (High Dynamic Range) with HDMI 2.1

- Supports HDCP 2.3 with HDMI 2.1 and DisplayPort 1.4 Ports

- Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and DisplayPort 1.4 Ports

• Supports Microsoft PlayReady*

Audio

• 7.1 CH HD Audio (Realtek ALC887 Audio Codec)

• Supports Surge Protection

LAN

• PCIE x1 Gigabit LAN 10/100/1000 Mb/s
• Realtek RTL8111H
• Supports Wake-On-LAN
• Supports Lightning/ESD Protection
• Supports Energy Efficient Ethernet 802.3az
- Supports PXE

Wireless

- Intel® 802.11ac WiFi Module

LAN

• Supports IEEE 802.11a/b/g/n/ac
• Supports Dual-Band (2.4/5 GHz)
• Supports high speed wireless connections up to 433Mbps
• Supports Bluetooth 4.2+ High speed class II

Rear Panel

- 2 x Antenna Ports

I/O

• 1 x PS/2 Mouse/Keyboard Port
- 1 x HDMI Port
- 1 x DisplayPort 1.4
• 2 x USB 2.0 Ports (Supports ESD Protection)
• 3 x USB 3.2 Gen1 Type-A Ports (Supports ESD Protection)
• 1 x USB 3.2 Gen1 Type-C Port (Supports ESD Protection)
- 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
• HD Audio Jacks: Line in / Front Speaker / Microphone

Storage

• 4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug
• 1 x Ultra M.2 Socket (M2_1), supports M Key type 2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)*

* Supports NVMe SSD as boot disks
* Supports ASRock U.2 Kit

Connector

• 1 x RGB LED Header

* Supports in total up to 12V/3A, 36W LED Strip
• 1 x Addressable LED Header
* Supports in total up to 5V/3A, 15W LED Strip
• 1 x CPU Fan Connector (4-pin)

* The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.

- 2 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)

* The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.

* CHA_FAN1/WP and CHA_FAN2/WP can auto detect if 3-pin or 4-pin fan is in use.

• 1 x 24 pin ATX Power Connector
• 1 x 8 pin 12V Power Connector
• 1 x Front Panel Audio Connector
- 1 x USB 2.0 Header (Supports 2 USB 2.0 ports) (Supports ESD Protection)
- 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)

BIOS

Feature

• AMI UEFI Legal BIOS with GUI support
• Supports "Plug and Play"
• ACPI 5.1 compliance wake up events
• Supports jumperfree
- SMBIOS 2.3 support
- CPU, CPU VDDCR_SOC, DRAM, VPPM, +1.8VSB, VDDP Voltage Multi-adjustment

Hardware

Monitor

• Temperature Sensing: CPU, Chassis/Water Pump Fans
• Fan Tachometer: CPU, Chassis/Water Pump Fans
- Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, Chassis/Water Pump Fans
• Fan Multi-Speed Control: CPU, Chassis/Water Pump Fans
• Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore

os

• Microsoft® Windows® 10 64-bit

Certifica-

tions

• FCC, CE
• ErP/EuP ready (ErP/EuP ready power supply is required)

Please realize that there is a certain risk involved with overclocking, including adjusting the setting in the BIOS, applying Untied Overclocking Technology, or using third-party overclocking tools. Overclocking may affect your system's stability, or even cause damage to the components and devices of your system. It should be done at your own risk and expense. We are not responsible for possible damage caused by overclocking.

Chapter 2 Installation

This is a Mini-ITX form factor motherboard. Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it.

Pre-installation Precautions

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

• Make sure to unplug the power cord before installing or removing the motherboard. Failure to do so may cause physical injuries to you and damages to motherboard components.
• In order to avoid damage from static electricity to the motherboard's components, NEVER place your motherboard directly on a carpet. Also remember to use a grounded wrist strap or touch a safety grounded object before you handle the components.
• Hold components by the edges and do not touch the ICs.
• Whenever you uninstall any components, place them on a grounded anti-static pad or in the bag that comes with the components.
• When placing screws to secure the motherboard to the chassis, please do not over-tighten the screws! Doing so may damage the motherboard.

2.1 Installing the CPU

Unplug all power cables before installing the CPU.

1

Diagram of a square electronic device with a central square and an arrow indicating rotation (no text or symbols)

2

Technical line drawing of a square electronic component with a vertical rod and circular highlight (no text or symbols)

3

Technical line drawing of a mechanical component with an arrow indicating rotation (no text or symbols)

2.2 Installing the CPU Fan and Heatsink

After you install the CPU into this motherboard, it is necessary to install a larger heatsink and cooling fan to dissipate heat. You also need to spray thermal grease between the CPU and the heatsink to improve heat dissipation. Make sure that the CPU and the heatsink are securely fastened and in good contact with each other.

Please turn off the power or remove the power cord before changing a CPU or heatsink.

Installing the CPU Box Cooler SR1

1

Technical diagram showing screw installation on a microchip base (no text or symbols)

2

Technical line drawing of an electronic component with two housing parts and orange arrows indicating assembly or movement (no text or symbols)

3

4

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Installing the AM4 Box Cooler SR2

1

Technical diagram showing screw fasteners inserted into a microchip assembly (no text or labels)

2

Technical line drawing of an electronic component with two views (top and side), showing internal structure and mounting points (no text or symbols)

3

4

Technical line drawing of a mechanical device with mounting base and wiring, no visible text or symbols

*The diagrams shown here are for reference only. The headers might be in a different position on your motherboard.

Installing the AM4 Box Cooler SR3

1

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2

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3

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4

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5

Technical line drawing of a mechanical device with internal components and wiring (no text or symbols)

6

*The diagrams shown here are for reference only. The headers might be in a different position on your motherboard.

2.3 Installing Memory Modules (DIMM)

This motherboard provides two 288-pin DDR4 (Double Data Rate 4) DIMM slots, and supports Dual Channel Memory Technology.

1. For dual channel configuration, you always need to install identical (the same brand, speed, size and chip-type) DDR4 DIMM pairs.
2. It is unable to activate Dual Channel Memory Technology with only one memory module installed.
3. It is not allowed to install a DDR, DDR2 or DDR3 memory module into a DDR4 slot; otherwise, this motherboard and DIMM may be damaged.

AMD non-XMP Memory Frequency Support

Ryzen Series CPUs (Matisse):

UDIMM Memory Slot

A1 B1

Frequency

(Mhz)

SR - 3200

- SR 3200

DR - 3200

- DR 3200

SR SR 3200

DR DR 3200

Ryzen Series APUs (Renoir):

UDIMM Memory Slot

A1 B1

Frequency

(Mhz)

SR - 3200

- SR 3200

DR - 3200

- DR 3200

SR SR 3200

DR DR 3200

The DIMM only fits in one correct orientation. It will cause permanent damage to the motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.

1

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2

Illustration of hands installing a mechanical component with a highlighted section (no text or symbols)

3

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2.4 Expansion Slot (PCI Express Slot)

There is 1 PCI Express slot on the motherboard.

Before installing an expansion card, please make sure that the power supply is switched off or the power cord is unplugged. Please read the documentation of the expansion card and make necessary hardware settings for the card before you start the installation.

PCIe slots:

PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.

* AMD Ryzen series CPUs (Matisse) supports PCIe riser cards to extend x8/x8 slots

For a better thermal environment, please connect a chassis fan to the motherboard's chassis fan connector (CHA_FAN1/WP or CHA_FAN2/WP) when using multiple graphics cards.

2.5 Jumpers Setup

The illustration shows how jumpers are setup. When the jumper cap is placed on the pins, the jumper is “Short”. If no jumper cap is placed on the pins, the jumper is “Open”.

Short

Open

Clear CMOS Jumper (CLRCMOS1)

(see p.1, No. 12)

2-pin Jumper

Short: Clear CMOS

Open: Default

CLRCMOS1 allows you to clear the data in CMOS. The data in CMOS includes system setup information such as system password, date, time, and system setup parameters. To clear and reset the system parameters to default setup, please turn off the computer and unplug the power cord, then use a jumper cap to short the pins on CLRCMOS1 for 3 seconds. Please remember to remove the jumper cap after clearing the CMOS. If you need to clear the CMOS when you just finish updating the BIOS, you must boot up the system first, and then shut it down before you do the clear-CMOS action.

2.6 Onboard Headers and Connectors

Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over these headers and connectors. Placing jumper caps over the headers and connectors will cause permanent damage to the motherboard.

System Panel Header (9-pin PANEL1) (see p.1, No. 10)

Connect the power button, reset button and system status indicator on the chassis to this header according to the pin assignments below. Note the positive and negative pins before connecting the cables.

PWRBTN (Power Button):

Connect to the power button on the chassis front panel. You may configure the way to turn off your system using the power button.

RESET (Reset Button):

Connect to the reset button on the chassis front panel. Press the reset button to restart the computer if the computer freezes and fails to perform a normal restart.

PLED (System Power LED):

Connect to the power status indicator on the chassis front panel. The LED is on when the system is operating. The LED keeps blinking when the system is in S1/S3 sleep state. The LED is off when the system is in S4 sleep state or powered off (S5).

HDLED (Hard Drive Activity LED):

Connect to the hard drive activity LED on the chassis front panel. The LED is on when the hard drive is reading or writing data.

The front panel design may differ by chassis. A front panel module mainly consists of power button, reset button, power LED, hard drive activity LED, speaker and etc. When connecting your chassis front panel module to this header, make sure the wire assignments and the pin assignments are matched correctly.

Chassis Speaker Header (4-pin SPEAKER1) (see p.1, No. 14)

Please connect the chassis speaker to this header.

Serial ATA3 Connectors

(SATA3_1_3:

see p.1, No. 7)

(SATA3_2_4:

see p.1, No. 8)

These four SATA3

connectors support SATA

data cables for internal

storage devices with up to

6.0 Gb/s data transfer rate.

USB 2.0 Headers

(9-pin USB_3_4)

(see p.1, No. 11)

There is one header on

this motherboard. This

USB 2.0 header can

support two ports.

USB 3.2 Gen1 Header

(19-pin USB3_4_5)

(see p.1, No. 9)

There is one header on

this motherboard. This

USB 3.2 Gen1 header can

support two ports.

Front Panel Audio Header

(9-pin HD_AUDIO1)

(see p.1, No. 15)

This header is for

connecting audio devices

to the front audio panel.

1. High Definition Audio supports Jack Sensing, but the panel wire on the chassis must support HDA to function correctly. Please follow the instructions in our manual and chassis manual to install your system.
2. If you use an AC'97 audio panel, please install it to the front panel audio header by the steps below:

A. Connect Mic_IN (MIC) to MIC2_L.
B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L.
C. Connect Ground (GND) to Ground (GND).
D. MIC_RET and OUT_RET are for the HD audio panel only. You don't need to connect them for the AC'97 audio panel.
E. To activate the front mic, go to the "FrontMic" Tab in the Realtek Control panel and adjust "Recording Volume".

Chassis Water Pump Fan Connectors

(4-pin CHA_FAN1/WP)

(see p.1, No. 4)

(4-pin CHA_FAN2/WP)

(see p.1, No. 13)

This motherboard provides two 4-Pin water cooling chassis fan connector. If you plan to connect a 3-Pin chassis water cooler fan, please connect it to Pin 1-3.

CPU Fan Connector

(4-pin CPU_FAN1)

(see p.1, No. 1)

This motherboard provides a 4-Pin CPU fan (Quiet Fan) connector. If you plan to connect a 3-Pin CPU fan, please connect it to Pin 1-3.

ATX Power Connector (24-pin ATXPWR1)

(see p.1, No. 6)

This motherboard provides a 24-pin ATX power connector. To use a 20-pin ATX power supply, please plug it along Pin 1 and Pin 13.

ATX 12V Power

Connector

(8-pin ATX12V1)

(see p.1, No. 16)

This motherboard provides a 8-pin ATX 12V power connector. To use a 4-pin ATX power supply, please plug it along Pin 1 and Pin 5.

*Warning: Please make sure that the power cable connected is for the CPU and not the graphics card. Do not plug the PCIe power cable to this connector.

RGB LED Header (4-pin RGB_LED1) (see p.1, No. 3)

RGB header is used to connect RGB LED extension cable which allows users to choose from various LED lighting effects.

Caution: Never install the RGB LED cable in the wrong orientation; otherwise, the cable may be damaged.

* Please refer to page 35 for further instructions on this header.

Addressable LED Header (3-pin ADDR_LED1) (see p.1, No. 2)

This header is used to connect Addressable LED extension cable which allows users to choose from various LED lighting effects.

Caution: Never install the Addressable LED cable in the wrong orientation; otherwise, the cable may be damaged.

* Please refer to page 36 for further instructions on this header.

2.7 M.2\_SSD (NGFF) Module Installation Guide (M2\_1)

The M.2, also known as the Next Generation Form Factor (NGFF), is a small size and versatile card edge connector that aims to replace mPCIe and mSATA. The Ultra M.2 Socket (M2_1) supports M Key type 2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s).

Installing the M.2\_SSD (NGFF) Module

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Step 1

Prepare a M.2_SSD (NGFF) module and the screw.

Technical line drawing of a mechanical component with dimension annotations (no text or symbols)

Step 2

Depending on the PCB type and length of your M.2_SSD (NGFF) module, find the corresponding nut location to be used.

No.1

Nut Location A

PCB Length 8cm

Module Type Type 2280

Step 3

Before installing a M.2 (NGFF) SSD module, please loosen the screws to remove the M.2 heatsink.

*Please remove the protective films on the bottom side of the M.2 heatsink before you install a M.2 SSD module.

Technical diagram of a mechanical assembly with a lever and pivot, showing no text or symbols

Step 4

Align and gently insert the M.2 (NGFF) SSD module into the M.2 slot. Please be aware that the M.2 (NGFF) SSD module only fits in one orientation.

Technical line drawing of a mechanical component with angular dimension (20°) and labeled point A, no readable text or symbols beyond annotations

Simple line drawing of a mechanical setup with a spring, hook, and rectangular block (no text or symbols)

Step 5

Tighten the screw with a screwdriver to secure the module into place. Please do not overtighten the screw as this might damage the module.

M.2\_SSD (NGFF) Module Support List

Vendor Interface P/N
ADATA SATA3 AXNS330E-32GM-B
ADATA SATA3 AXNS381E-128GM-B
ADATA SATA3 AXNS381E-256GM-B
ADATA SATA3 ASU800NS38-256GT-C
ADATA SATA3 ASU800NS38-512GT-C
Crucial SATA3 CT120M500SSD4
Crucial SATA3 CT240M500SSD4
Intel SATA3 Intel SSDSCKGW080A401/80G
Kingston SATA3 SM2280S3
Plextor PCIe PX-G256M6e
Plextor PCIe PX-G512M6e
Samsung PCIe x4 XP941-512G (MZHPU512HCGL)
SanDisk PCIe SD6PP4M-128G
SanDisk PCIe SD6PP4M-256G
Team SATA3 TM4PS4128GMC105
Team SATA3 TM4PS4256GMC105
Team SATA3 TM8PS4128GMC105
Team SATA3 TM8PS4256GMC105
Transcend	SATA3 TS256GMTS400
Transcend	SATA3 TS512GMTS600
Transcend	SATA3 TS512GMTS800
V-Color	SATA3 VLM100-120G-2280B-RD
V-Color	SATA3 VLM100-240G-2280RGB
V-Color	SATA3 VSM100-240G-2280
V-Color	SATA3 VLM100-240G-2280B-RD
WD	SATA3 WDS100T1B0B-00AS40
WD	SATA3 WDS240G1G0B-00RC30

For the latest updates of M.2_SSD (NFGG) module support list, please visit our website for details: http://www.asrock.com

2.8 ASRock Polychrome SYNC

ASRock Polychrome SYNC is a lighting control utility specifically designed for unique individuals with sophisticated tastes to build their own stylish colorful lighting system. Simply by connecting the LED strip, you can customize various lighting schemes and patterns, including Static, Breathing, Strobe, Cycling, Music, Wave and more.

Connecting the LED Strip

Connect your RGB LED strip to the RGB LED Header (RGB_LED1) on the motherboard.

1. Never install the RGB LED cable in the wrong orientation; otherwise, the cable may be damaged.
2. Before installing or removing your RGB LED cable, please power off your system and unplug the power cord from the power supply. Failure to do so may cause damages to motherboard components.

1. Please note that the RGB LED strip do not come with the package.
2. The RGB LED header supports standard 5050 RGB LED strip (12V/G/R/B), with a maximum power rating of 3A (12V) and length within 2 meters.

Connecting the Addressable RGB LED Strip

Connect your Addressable RGB LED strip to the Addressable LED Header (ADDR_LED1) on the motherboard.

1. Never install the RGB LED cable in the wrong orientation; otherwise, the cable may be damaged.
2. Before installing or removing your RGB LED cable, please power off your system and unplug the power cord from the power supply. Failure to do so may cause damages to motherboard components.

1. Please note that the RGB LED strips do not come with the package.
2. The RGB LED header supports WS2812B addressable RGB LED strip (5V/Data/GND), with a maximum power rating of 3A (5V) and length within 2 meters.

ASRock Polychrome SYNC Utility

Now you can adjust the RGB LED color through the ASRock Polychrome SYNC Utility. Download this utility from the ASRock Live Update & APP Shop and start coloring your PC style your way!

Technische Daten

* Supporta kit ASRock U.2

Connettore

• Supporta "Plug and Play"

• Supporta jumperfree

If you need to contact ASRock or want to know more about ASRock, you're welcome to visit ASRock's website at http://www.asrock.com; or you may contact your dealer for further information. For technical questions, please submit a support request form at http://www.asrock.com/support/tsd.asp

ASRock Incorporation

2F., No.37, Sec. 2, Jhongyang S. Rd., Beitou District,

Taipei City 112, Taiwan (R.O.C.)

ASRock EUROPE B.V.

Bijsterhuizen 11-11

6546 AR Nijmegen

The Netherlands

Phone: [phone]

Fax: [phone]

ASRock America, Inc.

13848 Magnolia Ave, Chino, CA91710

U.S.A.

Phone: [phone]

Fax: [phone]

DECLARATION OF CONFORMITY

Per FCC Part 2 Section 2.1077(a)

Responsible Party Name: ASRock Incorporation

Address: 13848 Magnolia Ave, Chino, CA91710

Phone/Fax N o: [phone]/[phone]

hereby declares that the product

Product Name : Motherboard

Model Number: A520M-ITX/ac

Conforms to the following specifications:

☒ FCC Part 15, Subpart B, Unintentional 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: James

Signature :

Date : May 12, 2017

EU Declaration of Conformity

ASRock®

For the following equipment:

Motherboard

(Product Name)

A520M-ITX/ac/ ASRock

(Model Designation / Trade Name)

ASRock Incorporation

(Manufacturer Name)

2F., No.37, Sec. 2, Jhongyang S. Rd., Beitou District, Taipei City 112, Taiwan (R.O.C.)

(Manufacturer Address)

☒ EMC — Directive 2014/30/EU (from April 20th, 2016)

□ EN 55022:2010/AC:2011 Class B

EN 55024:2010/A1:2015

EN 55032:2012+AC:2013 Class B

EN 61000-3-3:2013

EN 61000-3-2:2014

RED-Directive 2014/53/EU

□ EN 300 328 V2.1.1 EN 301 489-17 V3.1.1

×

□ EN 301 893 V2.1.1

□ EN 301 489-3 V2.1.1

□ EN 300 220 V3.1.1

□LVD — Directive 2014/35/EU (from April 20th, 2016)

□ EN 60950-1:2011+ A2:2013

□ EN 60950-1:2006/A12:2011

☒ RoHS — Directive 2011/65/EU

CE marking

CE

(EU conformity marking)

ASRock EUROPE B.V.

(Company Name)

Bijsterhuizen 1111 6546 AR Nijmegen The Netherlands

(Company Address)

Person responsible for making this declaration:

(Name, Surname)

A.V.P

(Position / Title)

May 27, 2020

(Date)

P/N: 15G062240000AK V1.0