4 Port Professional VGA USB KVM Switch with Hub

Control up to 4 PC or Mac® computers from a single keyboard, mouse and monitor and share any USB device between all connected computers

Product ID: SV431USB

3.8 stars (5 reviews) |
  • Supports hot-plug and disconnect – computers can be added or removed without the need to reboot other connected systems
  • Front panel push-buttons for quick and easy switching
  • High 1920x1440 resolution capability
Your price
$117.99USD

In stock: US: 0 | CA: 15

Where to buy StarTech.com products
Where to buy

The SV431USB 4 Port rack mountable VGA USB KVM Switch with Hub offers simple control of up to four computers from a single monitor/display and USB peripheral set (keyboard, mouse).

The USB KVM switch features an integrated 4 port USB hub, allowing you to share connected USB peripherals between the four controlled PC/Mac computers as though the devices were connected directly.

Offering convenient placement and installation options, the KVM switch features a 1U rack-mountable form factor and rear port connection to master and slave computers, allowing you to make the necessary device connections without disrupting your workspace.

A cross-platform solution, the KVM switch supports high resolution applications at up to 1920x1440 and provides a smooth operating experience when controlling mixed (Windows/Mac OS/Linux) environments.

This product is TAA compliant and backed by a Startech.com 3 year warranty with free lifetime technical support.

Rackmount your KVM switch

If you’d like to mount this KVM switch to your server rack, StarTech.com offers a 1U Rackmount Bracket (sold separately) that turns this KVM into a rackmountable KVM.

Applications

  • Sharing computers and USB devices in the home/SOHO/multimedia environment
  • Perfect for manufacturing line computer control, simplifying access to multiple systems
  • Great for PC test/burn-in computer control saving the desk space required for two monitors, keyboards and mice
  • Dual system control for single user workstations increasing user productivity in the office

The StarTech.com Advantage

  • Integrated USB 2.0 hub allows the user to share USB peripherals eliminating the expense of duplicate devices
  • Absolutely no software or drivers required providing a completely OS independent KVM solution

Partner Numbers

  • Tech Data 10920122
  • ASI 81696
  • D&H SV431USB
  • Ingram Micro USA 71611
  • SYNNEX US STA-SV431USB
  • UPC 065030787192

Compatibility

  • OS Independent logo
OS independent; No software or drivers required

Specifications

Warranty Information Warranty 3 Years
Connector(s) 1 - Console Interface(s) VGA (15 pin, High Density D-Sub)
4 - Console Interface(s) USB Type-A (4 pin) USB 2.0
4 - Host Connectors USB B (4 pin)
VGA (15 pin, High Density D-Sub)
Hardware Audio No
KVM Ports 4
PC Interface USB
PC Video Type VGA
Number of Monitors Supported 1
Rack-Mountable Optional
Cables Included No
U Height 1U
Daisy-Chain No
Packaging Information Package Height 2,8 in [72 mm]
Package Length 11,6 in [29,5 cm]
Shipping (Package) Weight 2,8 lb [1,3 kg]
Package Width 7,7 in [19,6 cm]
Performance On-Screen Display No
DVI Support No
IP Control No
Hot-Key Selection No
Maximum Cable Length 16,4 ft [5 m]
Maximum Analog Resolutions 1920 x 1440
Auto Scan 3, 8, 15 & 30 seconds
Maximum Number of Users 1
Port Selection Support Push Button
MTBF 82506 hours
Physical Characteristics Weight of Product 34,9 oz [988 g]
Color Black
Material Steel
Product Length 8,7 in [22 cm]
Product Width 5,1 in [13 cm]
Product Height 1,7 in [44 mm]
Power Power Source Not Included (not required for standard applications)
Input Voltage 110V-240V AC
Input Current 0.4A
Output Voltage 5 DC
Output Current 2A
Center Tip Polarity Positive
Plug Type N
N
Software OS Compatibility OS independent; No software or drivers required
Special Notes / Requirements Note In order to use the SV431USB with a USB keyboard that has additional USB ports, such as an Apple Macintosh keyboard, or to use the SV431USB with a USB hub, an additional power supply may be required
What's in the Box 1 - Included in Package 4 Port VGA USB KVM Switch
4 - Included in Package Rubber Feet
1 - Included in Package Instruction Manual

Accessories

SVUSBPOWER

Spare 5V DC Power Adapter for SV231USB & SV431USB

Replace, or keep a spare 5V DC (2 A) KVM switch power adapter on hand

Your price
$14.99USD

In stock: US: 518 | CA: 87

Where to buy StarTech.com products
SVUSB2N1_6

6 ft 2-in-1 USB KVM Cable

Connect VGA and USB-equipped computers to a KVM Switch using a single cable

Your price
$15.99USD

In stock: US: 870 | CA: 155

Where to buy StarTech.com products
SVUSB2N1_10

10 ft 2-in-1 Universal USB KVM Cable

Connect VGA and USB-equipped computers to a KVM Switch using a single cable

Your price
$21.99USD

In stock: US: 228 | CA: 40

Where to buy StarTech.com products
SVUSB2N1_15

15 ft 2-in-1 Universal USB KVM Cable

Connect VGA and USB-equipped computers to a KVM Switch using a single cable

Your price
$29.99USD

In stock: US: 297 | CA: 25

Where to buy StarTech.com products
MXT101MMHQ1

1 ft Coax High Resolution Monitor VGA Video Cable - HD15 to HD15 M/M

Connect your VGA monitor with the highest quality connection available

Your price
$9.99USD

In stock: US: 94 | CA: 202

Where to buy StarTech.com products
MXT101MMHQ3

3 ft Coax High Resolution Monitor VGA Cable - HD15 M/M

Connect your VGA monitor with the highest quality connection available

Your price
$10.99USD

In stock: US: 668 | CA: 151

Where to buy StarTech.com products
MXT101MMHQ

6 ft Coax High Resolution Monitor VGA Video Cable - HD15 to HD15 M/M

Connect your VGA monitor with the highest quality connection available

Your price
$13.99USD

In stock: US: 1160 | CA: 748

Where to buy StarTech.com products
MXT101MMHQ10

10 ft Coax High Resolution VGA Monitor Cable HD15 M/M

Connect your VGA monitor with the highest quality connection available

Your price
$18.99USD

In stock: US: 91 | CA: 327

Where to buy StarTech.com products
MXT101MMHQ20

20 ft Coax High Resolution Monitor VGA Cable HD15 M/M

Connect your VGA monitor with the highest quality connection available

Your price
$26.99USD

In stock: US: 595 | CA: 51

Where to buy StarTech.com products
MXT101MMHQ25

25 ft Coax High Resolution Monitor VGA Cable - HD15 M/M

Connect your VGA monitor with the highest quality connection available

Your price
$20.99USD

Check reseller availability

Where to buy StarTech.com products
USB2HAB1

1 ft USB 2.0 A to B Cable - M/M

Connect USB 2.0 peripherals to your computer

Your price
$9.99USD

In stock: US: 1940 | CA: 368

Where to buy StarTech.com products
Your price
$9.99USD

In stock: US: 2339 | CA: 53

Where to buy StarTech.com products
USB2HAB6

6 ft USB 2.0 Certified A to B Cable - M/M

Connect USB 2.0 peripherals to your computer

Your price
$7.99USD

Check reseller availability

Where to buy StarTech.com products
USB2HAB10

10 ft USB 2.0 Certified A to B Cable - M/M

Connect USB 2.0 peripherals to your computer

Your price
$8.99USD

Check reseller availability

Where to buy StarTech.com products
USB2HAB15

15 ft USB 2.0 A to B Cable - M/M

Connect USB 2.0 peripherals to your computer

Your price
$9.99USD

Check reseller availability

Where to buy StarTech.com products
MXT101HQ3

3 ft Coax High Resolution VGA Monitor Extension Cable - HD15 M/F

Connect your VGA monitor with the highest quality connection available

Your price
$11.99USD

In stock: US: 1163 | CA: 84

Where to buy StarTech.com products
MXT101HQ

6 ft Coax High Resolution VGA Monitor Extension Cable - HD15 M/F

Extend your VGA monitor connections by 6ft

Your price
$12.99USD

In stock: US: 688 | CA: 122

Where to buy StarTech.com products
MXT101HQ10

10 ft Coax High Resolution VGA Monitor Extension Cable - HD15 M/F

Extend your VGA monitor connections by 10ft

Your price
$17.99USD

In stock: US: 1103 | CA: 92

Where to buy StarTech.com products
MXT101HQ_25

25 ft Coax High Resolution VGA Monitor Extension Cable - HD15 M/F

Extend your VGA monitor connections by 25ft

Your price
$29.99USD

In stock: US: 188 | CA: 8

Where to buy StarTech.com products
SV431RACK

1U Rackmount Brackets for KVM Switch (SV431 Series)

Mount a 1U SV431 Series KVM switch into your server rack or cabinet

Your price
$36.99USD

In stock: US: 62 | CA: 3

Where to buy StarTech.com products

Drivers/Downloads

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Manual(s):

Datasheet

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Frequently Asked Questions

Installation

  1. Turn off all of the computers and monitors that will be connected to the KVM switch.
  2. Connect the power adapter to the KVM switch.
  3. Connect the video cables from your monitors to the console video port on the KVM switch. 
  4. Turn on the monitors.
  5. Connect your keyboard and mouse to the console PS/2 or USB ports on the KVM switch.
  6. If you have not done so already, change the KVM switch to focus on port 1.
  7. Connect the video cables from PC1 to the KVM switch.
  8. Connect the PS/2 or USB cables from PC1 to the PC1 PS/2 or USB ports on the KVM switch.
  9. Turn on PC1. You should see the computer load the operating system that you are using on PC1.
  10. Make sure that the mouse and keyboard can control PC1.
  11. Repeat steps 4 to 8 for each additional computer that you want to connect to the KVM switch. Leave the computer in focus until you make sure that the mouse and keyboard can control the computer in step 8.

Troubleshooting

Monitors may begin flickering when they receive a signal of insufficient quality. There are a few potential fixes available that will help to improve the signal quality in order to eliminate flickering:

  • Replace Video Cables with high-quality Video Cables (e.g. upgrade DisplayPort 1.2 Cables to DisplayPort 1.4 Cables).
  • Use shorter Video Cables to reduce signal attenuation.
  • When possible, remove Video Adapters to use native Video Connection Types (e.g. go from VGA to VGA, or DisplayPort to DisplayPort)
  • For DisplayPort Monitors, try changing the DisplayPort Version on the Monitor. For information on how to change your Monitor Settings refer to the Manual from the Monitor Manufacturer.
  • Update the Drivers for the Computer’s GPU to the latest available from the Monitor Manufacturer.
  1. Ensure the video & USB cables are connected between each computer and the KVM switch
  2. Safely power off all computers.  Unplug everything from the KVM switch and connect one computer at a time, swapping the inputs previously used (e.g., the computer connected to PC2 now connects to PC1). Power on each computer and confirm functionality before connecting the next one to the KVM switch. 
    • If using a KVM switch that supports multiple displays, ensure all video connections from the computer are from either the video card or motherboard, both cannot be used simultaneously on most systems.

There are some quick tests that you can perform to rule out potential issues. Start by turning off all of the connected computers and peripherals, unplugging everything from the KVM, including power, and leaving it for 10 seconds.  Then connect everything to the KVM following the procedure in the following FAQ: https://www.startech.com/faq/kvm-switches-setup.

You can test to make sure that the following components are working correctly and are not the source of the issue:

  • Video cables

  • KVM switch

  • Video source (such as a DVR or computer)

  • Video destination (such as a monitor or projector)

Note: When you are testing your setup components, it is recommended that you avoid using any video adapters. For example, if you are converting a VGA source to HDMI to be used with an HDMI extender, you should test with an HDMI source.

To test your setup components, try the following:

  • Use the video cable, KVM switch, video source, and video destination in another setup to see if the problem is with the components or the setup.

  • Use a different video cable, KVM switch, video source, and video destination in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.

When you test your cables, it is recommended that you do the following:

  • Test each cable individually.

  • Use short cables when you are testing.

When you test the video source and video destination, it is recommended that you do the following:

  • Remove the KVM switch from your setup and test to make sure that the video source and video destination work together without the KVM switch.

  • Test to make sure that the video source and video destination work together at the resolution that you want to use.

Note: In order for your setup to work properly, the video source, KVM switch, and video destination all need to support the resolution that you are using.

There are four troubleshooting actions that you can try if some but not all of the ports and your computer are working with the KVM switch. 

  • To determine if a specific cable is the source of the problem, switch the cables that connect the KVM switch to the computers to one working port and computer, and one port and computer that is not working. Keep the computer plugged into the same ports and only switch the cables. If the issue persists when you switch cables, the issue may be with the cable itself.
  • To determine if the problem is between the computer and the KVM switch, using the same cables, connect the KVM switch to one computer that is working and one computer that is not working. If the issue persists when you switch computers, follows the issue may be with the computer and the KVM switch.
  • Try reinitializing the KVM.  This is done by following the setup instructions on the website.
  • To determine if the KVM switch is the source of the problem, if you have another KVM switch, disconnect the current KVM switch and connect the second KVM switch.

If the keys on your keyboard are repeating, complete the following:

  1. If the KVM you are using has USB ports, you can move your keyboard to the USB hub port on the back of the KVM (the USB hubs are marked).

Note: When you move the keyboard out of the keyboard port, you will not be able to access the hotkeys.

  1.  You can adjust the typematic rate in your operating system’s settings. Depending on the version of Windows you are running, you can adjust the typematic rate by doing one of the following:
    • Click Control Panel > Keyboard > Speed. Adjust the repeat delay and repeat rate until the keys no longer repeat.
    • Click Control Panel > Hardware and Sound > Devices and Printers. Right-click Keyboard Settings. Adjust the repeat delay and repeat rate until the keys no longer repeat.

Before You Buy

KVM stands for Keyboard Video Mouse and KVM switches allow you to switch the use of a keyboard, display and mouse between multiple computers.  KVM switches also commonly let you switch audio and USB devices between computers.

There are different types of KVM switches as well.

  • Standard box KVM switches. (e.g. SV231USB)
  • Cable KVM switches. (e.g. SV211USB)
  • Multi-Monitor KVM switches.  (e.g. SV231DDUSB)
  • IP KVM switches. (e.g. SV841HDIE)

Standard box and cable KVM switches are a simple way to switch the use of a keyboard, display, and mouse between multiple computers.  Multi-monitor KVM switches allow you to switch multiple displays between computers, and IP KVM switches allow you to remotely control the KVM switch and connected computers over a network.

Here are some important things to consider before purchasing a KVM switch.

  • How many computers do you need to control?  Purchase a KVM switch that supports the number of computers in your setup.
  • Which video connections do your computers and display(s) support?  It is best practice to use the same video connections wherever possible.
  • Will you be using a PS/2 or USB mouse and keyboard?
  • Do you need multiple monitor support?  Ensure every computer can support the number of monitors you are looking to use in your setup.
  • Do you need audio support?
  • What resolution(s) do you want your display(s) running at?  The KVM switch must support the resolution(s) you want to use.
  • Would you like hotkey support?  Some KVM switches support the use of hotkey combinations to complete tasks such as switching between computers.

There are a couple of other important things you may want to take note of:

  • Some KVM switches require proprietary cables to function.  These KVM cables may vary by each KVM switch.  For StarTech.com KVM switches that require proprietary cables, the KVM switches will either come with these cables, or they will be listed in the Accessories tab on the individual product pages.  For more information, see our video dedicated to KVM switch cables.
  • Basic mice and keyboards are recommended for use with KVM switches.  Wireless, gaming or combo mice and keyboards (mice and keyboards that use a single USB connection / receiver for both units) can cause performance issues, and in general, are not supported for use with KVM switches.

It can be difficult to tell which ones are right for the KVM switch you are interested in.  How can you tell which KVM cables you require?  How can you tell if a KVM switch requires proprietary cables?  How do these cables work? 

Standard KVM Switches and Cables

Note: You will need one bundle of KVM cables per computer you want to connect to the KVM switch.

Standard KVM switches have no special cable requirements.  If you have spare video and PS/2 or USB cables, you can use them to hook up the KVM switch to your computers.  StarTech.com still sells KVM cable packages, but they are just for the convenience of buying them in bundles and usually involve some savings.  Keep in mind that even if you have some of the cables you need, it still might be advantageous to buy the bundle.

KVM Switches with Opposite Gender Video Connections

Some KVM switches use male video connections for the computers and female video connections for the console ports.  In this case you simply need a video extension cable, or a KVM cable package appropriate to the KVM switch.  This is so you cannot accidentally plug cables from your computer into the console ports.

KVM Switches Requiring Proprietary Cables

KVM switches can also use proprietary KVM cables to connect to the individual computers.  This is often done with larger KVM switches and KVM switches intended for a server environment.  These cables use a proprietary pinout which does not conform to the video standard in use, as the cable carries both the video and PS/2 or USB data along a single cable.

If you are unsure whether or not you need special cables, complete the following:

  1. Check the Technical Specifications tab on the individual product pages for What's in the Box.  This section lists everything that comes with your purchase, and your KVM switch might come with the cables.
  2. Check the Accessories tab.  This section lists potential accessories for the product you are looking at.  StarTech.com will list the appropriate KVM cables for the KVM switch here. 
  3. Check the Gallery and look at a picture of the back of the KVM switch.

Note: If there are no PS/2 or USB ports on the back of the KVM switch other than for the console, you will require proprietary cables.

If at this point you require further assistance in deciding which cables to purchase with your StarTech.com KVM switch, contact our technical support team.  

Whether a specific mouse or keyboard will work with StarTech.com KVM switches can depend on the type of mouse or keyboard you use.  Any mice with additional functionality or keyboards that are not standard 104 key keyboards could cause issues.  This includes wireless, gaming, combination (one USB receiver for both the mouse and keyboard), and Apple keyboards.  We recommend that you use a standard wired mouse and keyboard with our KVM switches, especially when you troubleshoot issues.

If you cannot get a specific mouse or keyboard to work with your KVM switch, connect the mouse or keyboard into the USB hub ports, if available (they are marked on the back of the KVM switch). If the KVM switch has hotkey functionality, you will lose the functionality when using these hub ports.

This device outputs a VGA signal. If you have a display or video destination that uses another type of video connection, there are ways that you can convert the video signal or connection. These options are outlined below and organized by the target connection.

Target connection First conversion Second conversion (if required)
DVI-D VGA to HDMI: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=VGA&filter_AVOUTPUT=HDMI. HDMI to DVI-D: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=VGA&filter_AVOUTPUT=HDMI.
DVI-I VGA to DVI-I: https://www.startech.com/Cables/Audio-Video/Video-Adapter/DVIVGA/. N/A
HDMI

VGA to HDMI: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=VGA&filter_AVOUTPUT=HDMI.

N/A
DisplayPort VGA to HDMI: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=VGA&filter_AVOUTPUT=HDMI. HDMI to DisplayPort: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=DisplayPort.

Note: You might need to use more than one converter as part of your solution; however, you should try to use the least number of converters and cables to connect your source and destination. If you have the option to convert to multiple target video connections, choose the option that requires the fewest number of conversions.

DVI-I and DVI-D

When you convert from VGA to DVI, you need to know if you are converting to a DVI-I or a DVI-D connection. For more information about how to identify the type of connection that you need, refer to the following FAQ: https://www.startech.com/faq/video_signal_converters_dvi_interface.

You also need to know which form of DVI that you are using, because DVI-I supports both analog (VGA) and digital (HDMI) signals, while DVI-D only supports digital (HDMI) signals.  

Note: Certain devices may have a DVI-I connection but only support DVI-D signaling. It is important to verify that your DVI-I device supports DVI-I signaling.

This device has a VGA input port.  If you have a video source that uses another video connection, there are options available to convert the video signal or connection. These options will be outlined below for each video source connection.

Source connection

Conversion

DVI-I

DVI-I to VGA: https://www.startech.com/DVIVGAMFBK.

DVI-D

DVI-D to VGA: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=DVI-D&filter_AVOUTPUT=VGA.

HDMI

HDMI to VGA: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=VGA.

DisplayPort

DisplayPort to VGA: https://www.startech.com/AV/Displayport-Converters/DP-VGA/.

DVI-I and DVI-D

When you convert from DVI to VGA, you need to know if you are converting from a DVI-I or a DVI-D connection. For more information about how to identify the type of connection that you have, refer to the following FAQ: https://www.startech.com/faq/video_signal_converters_dvi_interface.

You also need to know which form of DVI that you are using, because DVI-I supports both analog (VGA) and digital (HDMI) signals, while DVI-D only supports digital (HDMI) signals.  Some DVI-I connections only support DVI-D signaling.  In this case, you must use a DVI-D to VGA converter.

Common Issues

The beeping sounds cannot be disabled. They help confirm that a successful or unsuccessful hotkey command has been entered. Many people position their KVM switch out of sight.  As a result, this feature saves time by not having to check the LEDs or press the physical buttons on the KVM switch.
 

Compliance and safety

Compliance letters

  • WEEE
    • Language: English
  • RoHS
    • Language: English

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

Customer Reviews

(5 reviews)
3.8 out of 5 stars
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(1 Stars)

Missing Parts

By: cadams - 07/16/2014
Purchased this product recently. It doesn't include ANY cables, even though the Manual included lists them under "This Package Should contain" on Page 1. Why would the manual say that cables are included, when in fact they are not?
| Helpful?
David S, Customer Support on 7/17/2014 10:04:33 AM
Hi there, Sorry for the confusion. The manual for the 4-port SV431USB also covers our 2-port version, the SV231USB. The 2-port model includes cables, as referenced in the manual, the 4-port model does not.
(5 Stars)

The best KVM money can buy

By: Carlos Sanlucas - 03/27/2015
We utilize these switches every week for server and professional applications. They are worth every penny and yes - you need to buy mounting brackets and cables separately. Do the research! :)
| Helpful?

By: Orzzie - 11/11/2020
When mounting the KVM switch in the server rack or cabinet. You will need 6 feet to 15ft 2-in 1 universal USB KVM cable. Does the KVM switch comes with it the remote to switch from servers or it needs software to do switching.
| Helpful?
(5 Stars)

Does the job very well

By: Bob1024 - 04/21/2015
I have been using this KVM switch for a year now and it is working perfectly. So far I have only connected 2 linux laptop ( one of them is 8 years old Intel basic CPU, 500MB RAM, Fedora 20 ), both configured with dual display, all working well with the switch. Bought from dabs.com.
| Helpful?
(5 Stars)

100% rock solid product.

By: RockwoodColin - 11/19/2015
I've been using this daily for several years and it has performed flawlessly. I love the simplicity of the controls and the small form factor. I would highly recommend it to anyone.
| Helpful?
(3 Stars)

No hot-keys, needs POWER.

By: DrFranken - 04/03/2020
Unfortunately I read that this unit supports hot-key switching as do my other units but it does not. Why not is anyone's guess. It also does not come with a power supply. With my back-lit keyboard attached it refuses to work with any of the three computers I have. Adding a 2A 5V power supply was not enough. A 2.5A 5V supply was needed before the unit would provide any keyboard or mouse to any of the three computers.
| Helpful?
Matt, Customer Support on 4/3/2020 3:47:09 PM
Thank you for sharing your review of our SV431USB. This KVM switch does not support hot-keys as the USB ports on the switch are standard USB 2.0 ports and not specialized HID ports. While power may not be needed when using a basic keyboard and mouse without any special features, if your keyboard has a backlight and requires the full 5V at 0.5A, or if you have other devices connected that draw power from the USB ports, you may need to have a power adapter connected to ensure the USB ports are provided with enough power. If you have any questions or require any assistance we'd be happy to help look into this with you. You can contact us at www.startech.com/support where our Technical Advisors are available 24 hours a day, 5 days a week to provide assistance.
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