2-port Mini DisplayPort KVM Switch - USB 2.0 - 4K at 60Hz

Control 2 Mini DisplayPort computers with a single monitor, keyboard and mouse, using this DP 1.2 KVM switch

Product ID: SV231MDPU2

3,8 stars (6 reviews) |
  • Astonishing picture quality with support for video resolutions up to 4K
  • Maximum productivity with multi-system access
  • Hassle-free operation with hotkey and push-button switching (hot keys supported in Windows only)

This versatile USB KVM switch lets you share a Mini DisplayPort™ (mDP) workstation with two computer systems, providing control of an mDP monitor, keyboard and mouse, plus an additional USB peripheral device. Support for mDP makes this KVM the perfect accessory for your Mac workstation.

To ensure compatibility with your setup, this KVM switch was rigorously tested with the most popular platforms including Windows®, Linux® and Mac computers, and is powered through your USB peripherals, meaning you won't require an external power source.

Astonishing 4K picture quality

With support for resolutions up to 4K at 60hz, you'll be amazed at how this Mini DisplayPort KVM flawlessly manages your graphics-intensive content. At four times the resolution of high-definition 1080p, its lossless performance makes the switch the ideal solution for graphics-intensive applications such as CAD/ CAM design, graphic design, or health care imaging (MRI, radiology diagnostics, etc.). 

Plus, the KVM switch supports 1080p displays, which makes it a great accessory for home, office or other workspace applications.

Multi-system access

Featuring Mini DisplayPort 1.2 with 7.1 digital audio, plus a 3-port USB hub for your keyboard, mouse and an additional USB peripheral device, this KVM switch is perfect for accessing two separate systems using the same workstation - ideal for server control, simplifying access to multiple computer systems.

Hassle-free operation

This 2-port KVM delivers effortless operation with hardware and software switching, providing a simple yet comprehensive solution for switching between each connected computer. The switching software that's included gives you on-demand switching using an intuitive video interface. Hotkey control is also available when working with Windows computers, plus the switch features an easy-to-access toggle switch located on the front.


  • To achieve the maximum resolution of 4K at 60Hz, a video source and display that support that resolution are required.
  • If you're using a video adapter to connect this device to a monitor other than DisplayPort, such as HDMI or VGA, an active video adapter is required.
  • Hotkey switch commands are only supported when using Windows computers.

The SV231MDPU2 is backed by a 2-year StarTech.com warranty and free lifetime technical support.


  • Control two computer systems from a single workstation
  • View the high-resolution video output on medical and healthcare equipment such as MRI and X-Ray machines
  • Edit high-resolution video through the KVM switch
  • View the video output of satellite topography equipment with console control

Partner Numbers

  • Ingram Micro Belgium 2980653
  • Tech Data - Belgium 4461977
  • UPC 065030860819


  • OS Independent logo


Warranty Information Warranty 2 Years
Connector(s) 1 - Console Interface(s) Mini-DisplayPort (20 pin)
3 - Console Interface(s) USB Type-A (4 pin) USB 2.0
2 - Host Connectors Mini-DisplayPort (20 pin)
USB B (4 pin)
Environmental 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 0~80% RH
Hardware Audio No
KVM Ports 2
PC Interface USB
PC Video Type Mini DisplayPort
Number of Monitors Supported 1
Rack-Mountable No
Cables Included Yes
Industry Standards HDCP 2.2
Daisy-Chain No
Indicators 1 - LED Indicators Port 1 active LED
Port 2 active LED
Packaging Information Package Height 74 mm [2,9 in]
Package Length 19 cm [7,5 in]
Shipping (Package) Weight 845 g [29,8 oz]
Package Width 24,3 cm [9,6 in]
Performance On-Screen Display No
Video Revision DisplayPort 1.2
DVI Support Yes - Dual Link
IP Control No
Hot-Key Selection Yes
Maximum Digital Resolutions 4K - 3840 x 2160 @ 60Hz (supporting video source and display required) - MST
Wide Screen Supported Yes
Audio Specifications 7.1 digital audio (dependent on supporting display and video sources)
Maximum Number of Users 1
Port Selection Support Push Button and Hotkeys
General Specifications To achieve the maximum resolution of 4K at 60Hz, a video source and display that support that resolution are required.
Hotkey switch commands are only supported when using Windows computers.
Physical Characteristics Weight of Product 342 g [12,1 oz]
Color Black
Cable Length 1,2 m [3,9 ft]
Product Length 17,7 cm [7,0 in]
Product Width 82 mm [3,2 in]
Product Height 2,4 cm [0,9 in]
Power Power Source USB-Powered
What's in the Box 1 - Included in Package 2-Port mDP KVM Switch
Quick install guide
2 - Included in Package 4 ft (1.2 m) Mini DisplayPort KVM Cables



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Frequently Asked Questions


  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.


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.

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.

To output 4K to a DisplayPort display at 30Hz, your monitor must support the resolution and refresh rate. If your monitor also supports 4K at 60Hz (DP 1.2 or higher), you may also need to set the monitor to work at 30Hz. 

To resolve this issue, use the buttons on your monitor to change the DisplayPort settings to DP1.1. For more information about how to change your monitor settings, refer to the website of the manufacturer of your monitor.

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.

Common Issues

The Display Data Channel (DDC) communication from each connected computer can be disrupted when the focus of a KVM switch is switched between computers. This causes the computer to revert to a basic display configuration. In which any windows open may resize and/or move to a single display. This behavior is common among high-resolution or multi-display DisplayPort KVM switches and is not exclusive to StarTech.com products.

To avoid this behavior:

  • A DisplayPort EDID emulator can be connected between the computer and the DisplayPort KVM Switch. The DisplayPort EDID Emulator maintains the DDC communication to the connected computer, which prevents the computer from reverting to a more basic display configuration.
  • In Windows this can be worked around by pressing “Windows Key + m” prior to switching and “Windows Key + Shift + m” when you have returned to that Computer.

Compliance and safety

Compliance letters

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

(6 reviews)
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1 - 6 of 6 Reviews
(5 Stars)

Great Product - Great Technical Support

By: Imaginos - 09/17/2015
I recently built a new PC and the new video card and new monitor supported 4K @ 60Hz. I also have a laptop that has DP 1.2 video out. I decided to replace the DVI KVM I had to take advantage of the 4K Display. I searched for a reasonably priced KVM that would support DP 1.2 for 4k @ 60Hz and decided to try the StarTech KVM. I was having an issue getting my PC to work through the KVM. I was new to DP and had exhausted everything I could think of to get this to work properly so I reached out to StarTech support via web chat. I must say I was very impressed with the level of support that I received. Kudo’s to everyone at StarTech that I chatted with. These folks really are helpful!! It turns out the problem was not with the KVM but that I was using a 10 foot cable to go from the PC to the KVM due to the workspace layout I had. I did some rearranging and I was able to use a 6 foot cable instead and everything is working great now. The only suggestion I have is that the cables that were provided come standard DP at one end and mini DP on the other. Both the laptop and PC have standard DP connectors. This is a minor issue and it is a well-built KVM with a metal case. I would not hesitate to recommend StarTech - great product and great technical support!
| Helpful?
(1 Stars)

Monitor will not switch

By: Chuck Arconi - 02/15/2016
I just received this and it doesn't work I can switch to one system and the monitor comes on. After I switch to the other system the monitor will not display and when I switch back to the system that worked before now it doesn't. To make it work I have to reboot the system every time I switch. That isn't very useful! This product is way to sensitive.
| Helpful?
(5 Stars)

Stellar Support

By: msullivan - 05/30/2016
I bought this KVM to take advantage of 4K from my new PC build and my MacBook Pro. as soon as I setup the KVM I started to experience weird glitchy video and dropped connections all together. After several troubleshooting steps on my own including switching to 6-foot StarTech branded MDP2DP cables, I contacted support via email. Happy to retry any steps necessary to get the KVM to work, we tried various things including lower resolutions, switching cables around, resets, all to no avail. Last but not least, StarTech support sent me a 3-foot cable to try. Poof, problem solved. The StarTech support advisors cared about my issue and wanted to fix the problem! Don't see that miuch anymore these days! A+!
| Helpful?
(4 Stars)

Generally good. Sometimes requires a reboot

By: frei4all - 09/14/2017
I've been using this for a bit over a year. I've had it switching between a desktop PC and a MacBook Pro (mid-2014) until recently, when I started connecting it to a 12" MacBook Retina (2017) through a dongle with a MiniDP & a couple USB connectors instead of the MacBook Pro's Thunderbolt & USB ports. It's connected to a 4K display at 60Hz, a keyboard, trackball, and a USB hub for other stuff (Rocksmith cable, USB sticks, etc...) About once every 10-15 times I switch it around, the the video cuts out for a second every minute or two, then I have to reboot the computer and it's fine. Given that I can't find anything even close to the same as this, I'm pretty happy that it mostly works.
| Helpful?
(4 Stars)

Great, but automatic switching drives me crazy

By: Peter C - 10/17/2017
The switch works great with 2 x 4k sources, but I find when both computers are powered on my screen will go blank for about 5-10 seconds about once every 3-5 minutes. If disconnect the 2nd computer then the problem goes away. I wish there was a way to disable that!
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(4 Stars)

Support for MST hub downstream

By: Christopher - 12/21/2018
I have this combined with a MSTMDP123DP on the output port to switch between my desktop and laptop in my home office. It drives a pair of 1080P Dell S2419HGF monitors very nicely, though when combined with my RX580 either the monitors, graphics card or KVM won't allow for freesync through the DP path. Not a deal breaker but keep in mind that Freesync seems to be more commonly supported on HDMI and not DP links. This KVM also works best when one of the computers is not active. Switching disconnects the monitors, keyboard and mouse from one computer and connects them to another. Upside is that there's no emulation to mess with the PC's ability to use drivers for either mouse, keyboard or monitor but it is not for frequent switching between terminals. My use case is work laptop during the day, play desktop at night, so it works well for me. Your mileage may vary. USB3 support and leaving the monitors connected to the source would make this a perfect little KVM. All things considered is meets my needs very nicely.
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