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4 Port USB DisplayPort KVM Switch with Audio

Share keyboard, mouse, and DisplayPort display between four HD multimedia systems

Product ID: SV431DPUA

  • 7.1 Channel High Definition Audio support plus dual channel Analog Stereo and Microphone
  • Full plug-and-play support with USB keyboards, mice, and connected peripherals
  • Hotkey and push-button switching
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  • Native DisplayPort resolution of 2560x1600 @60Hz; beyond 1080p
  • OS independent - No driver or software required
  • Supports a maximum resolution of 3840x2400 at lower refresh rates
  • Supports DDC2B for monitor detection
  • Supports hot-plug, un-plug and link status-failure detection
  • Integrated 2 port USB 2.0 hub
  • User-defined scan time intervals
  • VESA and CEA compliant
  • Fully compatible with Mini-DisplayPort, HDMI, and DVI adapters
£324.99 GBP exc VAT
£389.99 GBP inc VAT
263+ In stock
Where To Buy
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Technical Specifications

Warranty Information
Warranty 3 Years
Audio Yes
Cables Included No
Daisy-Chain No
KVM Ports 4
Number of Monitors Supported 1
PC Interface USB
PC Video Type DisplayPort
Rack-Mountable Optional
DVI Support No
Hot-Key Selection Yes
IP Control No
Maximum Digital Resolutions 2560 x 1600 @ 60Hz
Maximum Number of Users 1
MTBF 136000 hours
On-Screen Display No
Port Selection Support Push Button and Hotkeys
Wide Screen Supported Yes
Console Interface(s) 1 - DisplayPort (20 pin) Female
2 - 3.5 mm Mini-Jack (3 Position) Female
4 - USB Type-A (4 pin) USB 2.0 Female
Host Connectors 4 - DisplayPort (20 pin) Female
4 - USB B (4 pin) Female
8 - 3.5 mm Mini-Jack (3 Position) Female
OS Compatibility OS independent; No software or drivers required
LED Indicators 1 - Power
4 - Green - Online indicator (One LED per port)
4 - Red - Select indicator (One LED per port)
Center Tip Polarity Positive
Input Current 0.8A
Input Voltage 100 - 240 AC
Output Current 1.5A
Output Voltage 12V DC
Plug Type M
Power Consumption (In Watts) 18
Power Source AC Adapter Included
Humidity 0~80% RH
Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -20°C to 60°C (-4°F to 140°F)
Physical Characteristics
Color Black
Material Steel
Product Depth 130.6 mm [5.1 in]
Product Height 4.4 cm [1.7 in]
Product Width 22.1 cm [8.7 in]
Weight of Product 1 kg [2.3 lb]
Packaging Information
Package Height 87 mm [3.4 in]
Package Length 41.1 cm [16.2 in]
Package Width 21.4 cm [8.4 in]
Shipping (Package) Weight 1.6 kg [3.6 lb]
What's in the Box
Included in Package 1 - 4-port DisplayPort KVM switch
4 - foot pads
1 - universal power adapter (NA/UK/EU/AU)
1 - instruction manual
Supports any operating system.
No additional drivers or software required.


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Customer Reviews

2.2 (5 reviews)
2.2 out of 5 stars
Quality of Product
Tell us what you think of this product.

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1 - 5 of 5 Reviews

(1 star) Not working with Ubuntu

By: Julien
I have 2 computers on Ubuntu, when I start the computer I have my screen, but if I switch to the second one and I switch back to the first, I don't have the screen anymore because the X server crash because the KVM doesn't respond to the displayport during switch... The KVM does not respect the display port standards...
Comment Helpful? Yes - 0 No - 2 Report
Response from
Matt, Customer Support
Thank you for your feedback Julien. We understand your disappointment in the performance of our SV431DPUA and we'd like to help troubleshoot this issue. We have a FAQ available regarding the disconnection of displays when using DisplayPort KVM switches here: This FAQ is referencing behavior in Windows but if the Ubuntu computer has difficulties when there isn't a display connected this could be what's causing the problem you're seeing. One fix, as recommended in the FAQ, is using a DisplayPort EDID emulator, of which both software and hardware versions are available. If you have any questions or require any assistance, please feel free to contact us at Our Technical Advisors are available 24 hours a day, 5 days a week to provide support.

(1 star) Flashes on 3 different HP monitors

By: KenRogrsRoasted
I bought 2 to do multiple setups for Deployment. Both have issues: flashing the screen (mostly off) and not catching a signal on start up so never seeing a screen. Lastly one of the two only works with two or less of the ports connected. I cannot find a firmware update or support for these issues.
Comment Helpful? Yes - 2 No - 0 Report
Response from
Brian, Customer Support
Thanks for leaving your feedback on our SV431DPUA KVM switch. We're sorry it didn't work well and would like to offer some help. Some 4K DisplayPort monitors can be problematic with extenders or KVM switches between them and the computer. We'd like to look into this further, please contact us by phone or live chat and mention this review.

(1 star) Fails to do 1080p

By: BrandonG777
Failed to output 1080p switching back and forth between sources. I can switch the refresh rate and the KVM will work but as soon as I switch inputs and back again it stops working until I change the refresh rate agian. I've used StarTech KVMs without too many issues, from VGA to DVI flavors and this is the first to not work consistently.
Comment Helpful? Yes - 1 No - 0 Report
Response from
Sam, Customer Support
We're sorry to hear about the problems you've had with SV431DPUA. It sounds as if your computer is losing the EDID information of the display when you switch away from it. In order to fix this, we suggest updating your graphics drivers, and if possible, removing any video adapters/converter cables between your computer and SV431DPUA. If you continue to have any problems, we recommend contacting our Technical Advisors at We're available 24 hours a day, 5 days a week, to provide support.

(4 stars) Does what I need it to without issue.

By: Mike B
Two weeks in and it is working flawlessly. No software setup, just plug in the two laptops and use it. I'm not using audio and not worried about 4K. Just using the basic keyboard, video and mouse. One difference is that my keyboard has the old PS/2 connection. Using a PS/2 to USB converter does not cause any issues with the KVM as I've seen on others in the past. A number of KVMs have issues with certain versions of Windows O/S. I have one laptop at Win 7 and the other at Win 8. No issues whatsoever. Will eventually put a third laptop (Win 10) and a desktop (Ubuntu 16) on the KVM as well.
Comment Helpful? Yes - 1 No - 0 Report

(4 stars) Good KVM but no 4K @60Hz

By: Bob Rysome
Bought this item awhile ago as part of a general system swap to use DisplayPort. It has been working fine with a series of 1k and 2k panels without trouble at max res. and frequency. As per usual - StarTech make reliable kit that is well made. Anyway, just got a new 4K panel and thought I would connect it up. It seems that the unit is only DisplayPort 1.1 compliant. This means that it will not do 4k @60Hz. It will only do a max of 4k @ 30Hz. Therefore, looking for an alternative solution to it at the moment. Unfortunately the 4k market for KVMs is a little stale at the moment in regards to DisplayPort. Would wish that StarTech would come out with one that supports 4 ports and DisplayPort 1.2 (at the very least - the standard has been around since 2009).
Quality of Product (5/5)
Comment Helpful? Yes - 12 No - 1 Report