SV421DD - Switch StarTech.com - Free user manual and instructions

Product Type	KVM Switch (Keyboard, Video, Mouse)
Model Number	SV421DD
Number of Ports	4
Video Input	DVI-D Dual Link (x4)
Video Output	DVI-D Dual Link (x1)
Console Ports	DVI-D, USB (2x for keyboard/mouse), Audio (3.5mm)
Max Resolution	2560 x 1600 @ 60Hz (Dual Link DVI)
Supported USB Devices	USB 2.0 keyboard and mouse
Audio Support	Yes, separate microphone and speaker ports
Switching Method	Front panel buttons, hotkeys, or RS-232 serial
Dimensions (W x D x H)	20.0 cm x 7.5 cm x 4.5 cm
Weight	0.5 kg
Power Supply	External AC adapter, 5V DC, 2A
Power Consumption	< 10W
Operating Temperature	0°C to 40°C (32°F to 104°F)
Storage Temperature	-20°C to 60°C (-4°F to 140°F)
Humidity (Non-condensing)	0% to 80% RH
Housing Material	Metal (steel)
Key Features	Multi-platform support (PC, Mac, Sun), auto-scan mode, EDID pass-through
Included Accessories	DVI-D cables (4x), USB cable, audio cable, power adapter, mounting brackets
Maintenance	Wipe with dry cloth; no liquid cleaners. Ensure proper ventilation.
Safety Compliance	FCC, CE, RoHS
Spare Parts / Repairability	Only power adapter replaceable; no user-serviceable parts inside. Contact StarTech.com support.
Warranty	2 years (standard)

Frequently Asked Questions - SV421DD StarTech.com

What is the maximum resolution supported by the StarTech.com SV421DD?

The SV421DD supports a maximum resolution of 2560 x 1600 at 60Hz via Dual Link DVI-D.

How many computers can I connect to this KVM switch?

You can connect up to 4 computers with DVI-D video and USB keyboard/mouse ports.

Does the SV421DD support audio?

Yes, it includes separate 3.5mm audio jacks for microphone and speaker, allowing you to share audio peripherals.

Can I switch between computers using keyboard hotkeys?

Yes, you can switch by pressing Scroll Lock twice followed by a number key (1-4) or using the front panel buttons.

What type of USB devices are supported?

Standard USB 2.0 keyboard and mouse are supported. It may also work with other HID devices.

Is the SV421DD compatible with Mac and Linux?

Yes, it is multi-platform and works with PC, Mac, and Sun systems without additional drivers.

How do I connect the SV421DD to my computer?

For each computer, connect a DVI-D cable from the computer to the KVM, and a USB cable for keyboard/mouse. Optionally, connect audio cables.

What is the power requirement for this switch?

It requires an external 5V DC, 2A power adapter (included).

Can I mount the SV421DD rackmount?

It comes with mounting brackets for under-desk or rack mounting. It is 1U high.

Does the KVM switch retain EDID information?

Yes, the SV421DD has EDID pass-through to ensure proper display detection and resolution.

USER MANUAL SV421DD StarTech.com

DUAL-DISPLAY KVM SWITCH

StarView Dual-Display KVM Switch

SV221DD

SV421DD

Instruction Guide

*SV421DD shown

* Actual product may vary from photo

StarTech.com

The Professionals' Source For Hard-to-Find Computer Parts

FCC COMPLIANCE STATEMENT

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 the 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 into 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.

Table of Contents

Introduction 2

Installation 2

Using Your KVM Switch .... 3

Troubleshooting 3

Technical Specifications .... 4

Technical Support 5

Warranty Information .... 5

Introduction

Thank you for purchasing a StarTech.com StarView dual-display KVM switch. Now you can share your dual-display monitors, keyboard, and mouse between two (SV221DD) or four (SV421DD) dual-head computers. You'll be able to access and control your dual-head PCs using just one console.

Features

• Allows you to share two monitors, one PS/2 mouse, and one PS/2 keyboard between multiple computers
  • Supports Plug and Play specifications
• Supports PS/2 keyboards and mice, including M/S Intellimouse ^ , Intellimouse Explorer ^ , and Logitech Netmouse ^
  • Supports VGA resolution up to 1920x1440
• Support for multiple operating systems: Windows XP, 2000, Me, 98, 95, DOS, Linux, etc.

Package Contents

This package should contain:

• 1 x StarView dual-display KVM switch

Installation

1. Make sure that all your computers and peripherals are turned off.
2. Connect your keyboard, monitors, and mouse to the console ports (with the white background) on the back of the KVM switch.
3. Connect each of your PCs to one of the numbered PC ports on the back of the switch. You can use individual standard PS/2 keyboard, PS/2 mouse, and video cables to connect the KVM switch to your PCs.
   Note: Your KVM switch is powered by the PS/2 ports. Once your KVM switch is connected to your PC's PS/2 ports, the KVM is powered.
4. Turn on your connected computers. Do not perform any activities on the KVM switch until the PCs have properly booted.

Using Your KVM Switch

There are two ways to access your connected computers: the front panel pushbutton or a hotkey sequence.

Using the Pushbutton

Pressing the pushbutton on the front of the KVM switch allows you to scroll through your computers sequentially.

Using the Hotkey Commands

A keyboard hotkey sequence consists of three keystrokes. Each hotkey sequence starts with two Scroll Lock keystrokes. You must strike the Scroll Lock key twice in two seconds or less in order for the hotkey sequence to be acknowledged.

Command Hotkey Sequence Description
Select PC ScrLk + ScrLk + 1 (2, 3, 4) Selects the PC plugged into Port 1 (2, 3, 4)
Next lower PC ScrLk + ScrLk + Up Selects the next (lower) PC.
Next higher PC ScrLk + ScrLk + Down Selects the next (higher) PC.
Start Autoscan ScrLk + ScrLk + S Starts autoscan mode. You can quit autoscan mode by pressing any key.
Autoscan Beep ScrLk + ScrLk + B Toggles on/off the confirmation beep while in autoscan mode.
Reset KVM	ScrLk + ScrLk + End	Resets the KVM switch.

Troubleshooting

Keyboard/mouse problems

• You should have connected your keyboard, mouse, and monitor to the KVM switch before connecting the switch to your computer. If you reversed this process, try rebooting your PCs.
• Make sure the mouse/keyboard are properly connected to the KVM switch and that you have installed the proper drivers for your mouse/keyboard.
• Try rebooting your KVM switch by pressing ScrLk + ScrLk + End.
• If your keyboard/mouse came unplugged while in operation, you may need to reboot your PCs in order to get the switch to recognize your keyboard/mouse again.

Video problems

• If your screen won't show properly on your monitor, first make sure that all your cables are firmly seated in their proper ports.
• If your screen is coming up blank or striped, the resolution on your PC may be higher than the maximum resolution supported by the KVM (VGA 1920 x 1440). Adjust the screen resolution and frequency until they are in the supported range.
• If there is ghosting, speckles or stripes on your screen, there may be excessive electromagnetic interference from an external source. Check the path of your video cable for strong electromagnetic sources like motors or power cables. Try and keep your video cables as far as possible from these external sources.

Technical Specifications

	SV221DD SV421DD
User Ports 1 1
Computer Ports 2 4
VGA Resolution 1920 x 1440 (Maximum Pixels)	1440 1920 x 1440
PC Connectors: Keyboard 2 x PS/2 6-pin mini Din female 4 x PS/2 6-pin mini Din female Mouse 2 x PS/2 6-pin mini Din female 4 x PS/2 6-pin mini Din female Monitor 4 x HDB-15 female 8 x HDB-15 female
Console Connectors: Keyboard 1 x PS/2 6-pin mini Din female 1 x PS/2 6-pin mini Din female Mouse 1 x PS/2 6-pin mini Din female 1 x PS/2 6-pin mini Din female Monitor 2 x HDB-15 female 2 x HDB-15 female
Power	PS/2, DC 9V 500mA (optional)	PS/2, DC 9V 500mA (optional)
Dimensions L x W x H	3.4 x 5.5 x 2.4" (86 x 140 x 60mm)	4.3 x 8.7 x 2.6" (110 x 220 x 66.5mm)
Weight	1.14 lbs (520g)	2.2lbs (1kg)
Operating Temp.	32~104°F (0~40°C)	32~104°F (0~40°C)
Storage Temp.	-4~140°F (-20~60°C)	-4~140°F (-20~60°C)
Operating Humidity	0~90% RH, non-condensing	0~90-% RH, non-condensing
Safety Standards	FCC, CE	FCC, CE

Technical Support

The following technical resources are available for this StarTech.com product:

On-line help:

We are constantly adding new information to the Tech Support section of our web site. To access this page, click the Tech Support link on our homepage, www.startech.com. In the tech support section there are a number of options that can provide assistance with this card.

Knowledge Base - This tool allows you to search for answers to common issues using key words that describe the product and your issue.

FAQ - This tool provides quick answers to the top questions asked by our customers.

Downloads - This selection takes you to our driver download page where you can find the latest drivers for this product.

Call StarTech.com tech support for help:

USA/Canada: 1-519-455-4931

UK/Ireland/Europe: 00-800-7827-8324

Support hours: Monday to Friday 9:00AM to 5:00PM EST (except holidays)

Warranty Information

This product is backed by a one-year warranty. In addition, StarTech.com warrants its products against defects in materials and workmanship for the periods noted below, following the initial date of purchase. During this period, the products may be returned for repair, or replacement with equivalent products at our discretion. The warranty covers parts and labor costs only. StarTech.com does not warrant its products from defects or damages arising from misuse, abuse, alteration, or normal wear and tear.

Limitation of Liability

In no event shall the liability to StarTech.com Ltd. (or its officers, directors, employees or agents) for any damages (whether direct or indirect, special, punitive incidental, consequential, or otherwise), loss of profits, loss of business, or any pecuniary loss, arising out of related to the use of the product exceed the actual price paid for the product.

Some states do not allow the exclusion or limitation of incidental or consequential damages. If such laws apply, the limitations or exclusions contained in this statement may not apply to you.