3-Port Multi Monitor Adapter - Mini DisplayPort 1.2 to 3x DisplayPort MST Hub - Triple 1080p or Dual 4K 30Hz - mDP to DP MST Video Splitter for Windows Extended Desktop

Use this adapter to connect three independent displays to a single mDP 1.2 port

Product ID: MSTMDP123DP

3,1 stars (16 reviews) |
  • Output video to virtually any display with support for low-cost DVI, HDMI or VGA video adapters
  • MULTIPLE MONITORS: Mini DisplayPort multi monitor adapter can drive 3x DisplayPort displays (DP 1.2/HBR2/21.6Gbps) at 1080p 60Hz or 2x @ 4K 30Hz using a mDP port on Windows PCs w/ no video compression
  • INCREASE PRODUCTIVITY: This multi stream transport hub (MST Hub) helps increase your productivity by allowing you to add dual or triple extended screens to your office/home office workstation
Your price
€154,99 EUR excl. VAT
€193,74 EUR incl. VAT

This MST hub lets you connect three DisplayPort monitors to your Mini DisplayPort computer. MST works on any Windows® device that supports DisplayPort 1.2, such as models of the Lenovo™ Think Pad® and Microsoft® Surface™. When connected to earlier revisions of DisplayPort, such as DP 1.1 the MST hub acts as a video splitter.

Increase your productivity with multiple monitors

The newest generations of laptops are more portable than ever, unfortunately this means you’re left with fewer video outputs and a small integrated screen. The MST hub solves these problems by letting you connect three independent displays to a single mDP port on your computer, which makes multitasking much easier. Using the MST hub, you can extend your desktop onto additional monitors and stream independent content to each display, which makes it easier to multitask and increase your productivity - perfect for creating an easy-to-dock hot desk solution with a wireless keyboard and mouse peripheral set. You can also mirror the same image onto multiple displays for remote viewing applications such as digital signage.

Increase Productivity with multiple screens

Astonishing picture quality that won’t drain your system resources

MST technology uses your existing video card to minimize the use of system resources while delivering Ultra HD 4K resolutions. 4K is supported by the latest A/V devices and delivers four times the resolution of 1080p. Plus, because the MST hub can output high-definition 1080p, the MST hub is perfect for all high-resolution applications such as graphic design and medical imaging. 

productivity software displayed on three monitors

Works with any monitor, television or projector

With this MST hub, you can use separate mDP video adapters to connect HDMI, VGA or DVI displays,  for compatibility with all of your existing monitors. The hub is VESA and DisplayPort certified to support DP 1.2 enabled systems, for seamless integration with your existing video equipment.

Extend Your Compatibility

The MSTMDP123DP has been certified by Microsoft and tested for compatibility with your Microsoft Surface Pro 3, Surface Pro 4 and Surface Book and is backed by a 3-year StarTech.com warranty and free lifetime technical support.

Designed for Microsoft Surface Certification logo

Applications

  • Add additional displays to your computer
  • Use one screen for reference data such as websites, while composing in another screen
  • Edit images, video or audio clips across three displays in any orientation or resolution
  • Perfect for spanning a spreadsheet/worksheet across all three displays, to avoid side-scrolling
  • Enjoy panoramic game environments spanning two displays, while displaying helpful codes or walkthrough data on a third display

Partner Numbers

  • Ingram DK V933102
  • ALSO Denmark 000000000002764081
  • UPC 065030851879

Compatibility

  • Windows 8 logo
  • Windows 7 logo
  • Windows 10 logo
Windows 10 (32/64)
Windows 8/8.1 (32/64)
Windows 7(32/64)

Specifications

Warranty Information Warranty 3 Years
Connector(s) 1 - Connector A Mini-DisplayPort (20 pin)
3 - Connector B DisplayPort (20 pin)
Environmental Operating Temperature 0°C to 45°C (32°F to 113°F)
Storage Temperature -20°C to 70°C (-4°F to 158°F)
Hardware Active or Passive Adapter Active
AV Input Mini DisplayPort - 1.2
Ports 3
AV Output DisplayPort - 1.2
Audio Yes
Chipset ID MegaChips - STDP4320
Packaging Information Package Height 55 m [180,4 ft]
Package Length 155 m [508,4 ft]
Shipping (Package) Weight 407 kg [899,5 lb]
Package Width 228 m [747,8 ft]
Performance Audio Specifications DisplayPort - 5.1 Channel Audio
Maximum Cable Distance To Display 2 m [6,6 ft]
Maximum Digital Resolutions Up to 4K
Supported Resolutions

Note: MST shares 21.6 Gbps across all attached displays. Higher resolutions can restrict the available bandwidth with the remaining ports, please see our guideline below for determining an ideal resolution for your setup.

Average resolution bandwidth allocation

1920x1080 (High-definition 1080p) @60hz - 22%
1920x1200 @60hz - 30%
2560x1440 @60hz - 35%
2560x1600 @60hz - 38%
3840 x 2160 (Ultra HD 4K) @30hz - 38%

Note: Exceeding 100% will reduce functionality.

Wide Screen Supported Yes
Physical Characteristics Weight of Product 87 kg [192,3 lb]
Color Black
Material Plastic
Cable Length 1,0 m [3,3 ft]
Product Length 200 m [656,0 ft]
Product Width 78 m [255,8 ft]
Product Height 20 m [65,6 ft]
Power Power Source AC Adapter Included
Input Voltage 100 - 240 AC
Input Current 0.5 A
Output Voltage 5 DC
Output Current 3A
Center Tip Polarity Positive
Plug Type N
Power Consumption (In Watts) 15
Software OS Compatibility Windows 10 (32/64)
Windows 8/8.1 (32/64)
Windows 7(32/64)
Special Notes / Requirements Note DisplayPort 1.2 with MST+HBR2 support from the GPU is required for independent display output
When using a DisplayPort 1.1 video card the MSTMDP123DP will act as splitter, automatically mirroring your video source across all displays. Resolution limitations apply
Certain graphics adapters have limited MST support and will only output to three displays in total. If more than three monitors are attached the fourth will be disabled.
What's in the Box 1 - Included in Package Mini DisplayPort to DisplayPort MST Hub
Universal Power Adapter (NA/EU/UK/AUS)
Instruction Manual

Accessories

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Provide high resolution digital video and audio performance between your DisplayPort®-enabled devices

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Drivers/Downloads

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Frequently Asked Questions

Installation

To set up a MST hub with your MST compatible system, complete the following:

  1. Plug the MST hub into a compatible DisplayPort 1.2 output from your computer.
  2. Plug the power into the MST hub.
  3. Plug your DisplayPort monitors or DisplayPort adapters/converters into the MST hub.
  4. Turn on your computer.

You should be able to detect the monitors in the display properties of your operating system.

If you are not getting any additional displays, try the following:

  • Verify that the latest display drivers are installed.
  • Press and hold the Scan button for five seconds on the MST hub.

When the monitors are detected in the display properties of your operating system, make sure that the resolutions that you are setting do not exceed the total data throughput of the DisplayPort host connection. You can verify the total data throughput (bandwidth) under the Product Overview tab for you device.

Troubleshooting

Check that the device is not being used in reverse.

The display does not support the resolution set within Display Settings. Adjust the resolution to be the exact resolution and refresh rate recommended by the display manufacturer.

  1. Open the Intel, AMD, or Nvidia application that controls the display settings.  This is recommended over Windows Display Settings when using an MST product. Go to Settings and select the monitor that is not outputting a video signal.  Check that the resolution and refresh rate is correct for that model of display.  
  2. The product may be connected to a video source that does not support MST.  Note: macOS will not allow the displays to our product to be extended.
  3. In Windows, open Screen Resolution or Display Settings and ensure all numbered displays are set to Extend.  If some displays do not appear, press the scan button (where applicable) firmly for about half a second.
  4. The display configuration may be using too much bandwidth. An example would be two 4K displays and one 2560x1440 display. That configuration will exceed the bandwidth limitations of DP 1.2.  Also, be aware of displays with higher refresh rates.  A 120 Hz display will use twice the bandwidth of a 60 Hz version using the same screen resolution.
  5. One or more of the displays(s) connected to our MST hub may be set to the wrong video input. Use the display’s on-screen display menu to select the correct input.
  1. Try using shorter or higher quality video cables.
  2. Press the scan button (where applicable) on our product firmly for about half a second. Then open Screen Resolution or Display Settings and ensure all numbered displays are set to Extend.  For good measure, ensure each display is set to a 60 Hz refresh rate before trying to use a higher refresh rate.
  3. If using passive DisplayPort to DVI or HDMI cables or adapters, replace them with active DisplayPort to DVI or HDMI adapters (Ex. DP2DVIS, DP2HD4KS).
  • Note: these adapters will require a DVI or HDMI cable to be used to connect the monitors.
  1. The primary display adapter for the computer has an outdated or basic driver installed. Update the video driver using the manufacturer’s support site.

Video splitters take the output for monitor port 1 and mirror it to the remaining outputs. By default, the first output port is the master port that is mirrored to each additional monitor. Make sure that you use the first output port when you use the video splitter. The master port is labeled on the splitter boxes from StarTech.com. On the splitter cables from StarTech.com, the master port is the top port.

If you are having issues with a splitter interpreting the incorrect port as the master port, try the following:

  1. Unplug all of the video connections.

  2. If the splitter is powered, power cycle the splitter.

  3. Plug in all of the video connections again.

  4. Make sure that the first video connection plugged in is the one that you want to be the master port.

When you troubleshoot issues with an MST hub, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:

  • Video cables

  • Video source

  • Video destination

  • MST Hub

To test your setup components, try the following:

  • Use the video cables, video source, video destination, and MST hub in another setup to see if the problem is with the components or the setup.

  • Use a different video cable, video source, video destination, and MST hub 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.

  • Eliminate the use of adapters, extenders, or splitters where possible.

When you test the MST hub with your computer system, do the following:

  • Make sure that the computer/graphics adapter is MST compatible. For more information, refer to the following FAQ: http://www.startech.com/faq/mst-hubs-gpu-compatibility.

  • Make sure that the latest graphics drivers are installed. The latest drivers are available on the website of the manufacturer of the graphics adapter.

  • Use compatible adapters. For example, DisplayPort to HDMI and not HDMI to DisplayPort.

Note: Drivers are not required for the MST hub.

To check to see if Windows is detecting the monitor, on a computer that is running a version of Windows 8 or Windows 10, do the following:

  1. On your keyboard, press the Windows key + X and click Control Panel.
  2. Click Appearance and Personalization, then click Display.
  3. In the left column, click Resolution or Adjust Resolution. Your monitors will be displayed as numbered icons.
  4. To see which monitors are detected, click the Display menu.
  5. To display the numbers on each of the connected monitors and see how the operating system has assigned their positions, click Identify.

To check to see if Windows is detecting the monitor, on a computer that is running a version of Windows 7, do the following:

  1. Right-click on the desktop and click Screen Resolution.
  2. To see which monitors are detected, click the Display menu.
  3. In the left column, click Resolution or Adjust Resolution. Your monitors will be displayed as numbered icons.
  4. To display the numbers on each of the connected monitors and see how the operating system has assigned their positions, click Identify.

If you are experiencing flickering issues with the MST hub, your monitors may be at a 59 Hz refresh rate. If they are at 59 Hz, you need to adjust the refresh rate to 60 Hz. In order to change your monitor's refresh rate, complete the following:

  1. Right-click anywhere on your desktop.
  2. Click Screen resolution or Display settings.
  3. At the top of the screen, select the monitor that you want to change the refresh rate for.
  4. Click Advanced settings or Display adapter properties.
  5. On the Monitor tab, click the Screen refresh rate drop-down list.

Note: This step may vary depending on your operating system and graphics card.

If the displays connected to your MST hub do not wake up after your computer goes to sleep, change the input on the monitor(s) from Auto to the correct input (for example, DisplayPort or HDMI). This prompts the monitor to send its identification data to the correct port instead of scanning for ports when the signal is lost.

After you select the correct input on the monitor(s), press the Scan button to initiate the handshake (EDID) process. For more information on the Scan button, refer to the following FAQ: http://www.startech.com/faq/mst-hubs-scan-button.

If you set the monitor to the correct video port and press the Scan button and the issue is still not resolved, you need to disable sleep mode on your computer. To disable sleep on a computer running a version of Windows, complete the following:

  1. Open Control Panel.

  2. Click Power Options.

Note: Depending on how you have the View by options set in Control Panel, you might have to click Hardware and Sound to see Power Options.

  1. Click Change plan settings for the plan in use.

  2. For both entries, change Put the computer to sleep to Never.

  3. Click Save Changes.

By default, most systems will duplicate to multiple displays when a MST hub is attached. If you are getting mirrored displays and cannot detect more than one display in Screen Resolution or Display Settings, your graphics card may not be compatible with MST. For more information about how to determine if your graphics card is MST compatible, refer to the following FAQ: https://www.startech.com/faq/mst-hubs-gpu-compatibility

If you are using a version of Mac OSX, refer to the following FAQ for more information: https://www.startech.com/faq/mst-hubs-mac-osx-support.

In order for your mouse to move properly between your monitors you must rearrange your monitors in Windows to match the physical location of your monitors on your desk. To do so, complete the following based on your operating system:

Windows 10 and Windows  8

  1. On your keyboard, press the Windows key + X and select Control Panel.
  2. Click Appearance and Personalization, then click Display.
  3. Click the Resolution or Adjust Resolution option from the left column, which will display your monitors as numbered icons.
  4. Click Identify to display the numbers on each connected monitor, showing how the operating system has assigned their positions.
  5. Click and drag the monitor icons to best match your physical setup.
  6. Click OK to apply the changes and close the window.

Windows 7 and Windows Vista

  1. Click the Start button and select Control Panel.
  2. Click Appearance and Personalization, then click Display.
  3. Click the Resolution or Adjust Resolution option from the left column, which will display your monitors as numbered icons.
  4. Click Identify to display the numbers on each connected monitor, showing how the operating system has assigned their positions.
  5. Click and drag the monitor icons to best match your physical setup.
  6. Click OK to apply the changes and close the window.

Windows XP

  1. Click the Start button and select Control Panel.
  2. Double-click Display.
  3. Click the Settings tab, which will display your monitors as numbered icons.
  4. Click Identify to display the numbers on each connected monitor, showing how the operating system has assigned their positions.
  5. Click and drag the monitor icons to best match your physical setup.
  6. Click OK to apply the changes and close the window.

To mirror the image from your primary monitor instead of extending your desktop, refer to the following FAQ: http://www.startech.com/faq/Windows_Mirroring_Monitors

If a DisplayPort converter with audio is not passing sound from the source to the destination, complete the following:

  1. Make sure that the DisplayPort connection on the video card is the default audio playback device.
  2. Make sure that the video card has the DisplayPort audio codec installed. If not, visit the video card manufacturer's website to find out how to update the video card driver.

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.

How To

To arrange extended displays on Windows 10, complete the following. 

  1. Press the Windows key+R, type desk.cpl, and press Enter. 
  2. Under the ‘Multiple Displays’ selection, select ‘Extend Desktop To This Display.’  
  3. Press ‘Identify’ to determine what number each display is assigned to. 
  4. Drag and drop each display accordingly to the physical layout on your desk.  
  5. Click the Apply button. 

Windows 10 / 8

  1. On your keyboard, press the Windows Key + X and select Control Panel.
  2. Click Appearance and Personalization, then click Display.
  3. Click the Resolution or Adjust Resolution option from the left column.
  4. Expand the drop-down menu next to “Multiple displays” and select Duplicate these Displays.
  5. Click OK to apply the changes and close the window.

Windows 7 / Vista

  1. Click the Start button and select Control Panel.
  2. Click Appearance and Personalization, then click Display.
  3. Click the Resolution or Adjust Resolution option from the left column.
  4. Expand the drop-down menu next to “Multiple displays” and select Duplicate these Displays.
  5. Click OK to apply the changes and close the window.

Windows XP

  1. Click the Start button and select Control Panel.
  2. Double-click Display.
  3. Click the Settings tab.
  4. Un-check the box beside Extend my Windows desktop onto this monitor.
  5. Click OK to apply the changes and close the window.

Before You Buy

You may have heard of MST hubs, and have been wondering what they are, and whether or not they will work in your setup. 

So what are MST hubs?  MST hubs are devices that take one DisplayPort or Mini DisplayPort video connection, and go to many video connections, usually extra DisplayPort, Mini DisplayPort, DVI or HDMI connections.  This is accomplished through DisplayPort's MST, or Multi Stream Transport function.  MST hubs allow you to mirror / duplicate your monitors so the same window are shown on all of the monitors, or extend your desktop, so that you can have different window on each monitor.

So how can you tell if you can use a MST hub?  MST hubs require that the video card's DisplayPort or Mini DisplayPort output support DP1.2 or greater, which supports MST.  Some MST hubs also specifically require HBR2, or High Bit Rate 2 support.  HBR2 allows for higher resolutions like 4K and up.  You can check whether or not a StarTech.com MST hub requires HBR2 on the individual product pages, under the Technical Specifications tab.

There are a few other important things to note.

  • Video cards can technically support DP1.2, but not support MST or HBR2, so it is important to check with your video card manufacturer that your video card specifically supports DP1.2, MST, and HBR2 (if necessary).

Currently Mac OSX does not support MST hubs, regardless of whether or not the video card does.  This is an operating system restriction, so running Windows on an Apple computer through a program like Bootcamp will allow you to use MST hubs.

Recent versions of DisplayPort include the ability to split to multiple displays from one DisplayPort connection using Multi-Stream Transport (MST).

Although you will be able to connect the MST hub to the Mini DisplayPort (mDP) connection on your Mac, Mac OSX does not support MST for NVIDIA and Intel Graphics Processor Units (GPUs). This results in a mirrored image across the outputs of a MST hub and you will not be able to have multiple independent displays on your Mac.

The limitation of NVIDIA and Intel GPUs lies within Mac OSX. If a different operating system is used, such as Microsoft Windows via Bootcamp, you may be able to use the MST functionality of your Mac.

When you convert from DisplayPort to DVI or HDMI, it works best if you use passive video signal converters with StarTech.com MST hubs. The MST hub has the capability to convert a video signal DisplayPort to a DVI or HDMI video signal as long as a video signal converter is used to change the connection type. This is because DisplayPort 1.2 (DP 1.2) supports both MST (Multi-Stream Transport) and Dual Mode (DP++). For more information, refer to the following FAQ: http://www.startech.com/faq/displayport_converter_dp_multi_mode.

When you convert from DisplayPort to VGA, you must use an active adapter because DisplayPort uses a digital signal and VGA uses an analog signal, and the MST hub cannot convert from a digital signal to an analog signal.

Note: When you use a StarTech.com video signal converter to convert from DisplayPort to VGA, you should use the DP2VGA3. In certain circumstances, the DP2VGA2 has compatibility issues with certain VGA monitors.

Surface Dock

If you experience issues when you use a Surface Dock to connect passive video signal adapters to an MST hub, Microsoft recommends that you use active video signal converters instead. StarTech.com offers an active video signal converter for DVI monitors (DP2DVIS) and for HDMI monitors (DP2HD4KS).

Note: This issue does not apply to the Surface Pro 3 Docking Station.

Note: For information about Microsoft Surface tablets and MST, refer to the following FAQ: http://www.startech.com/faq/mst-hubs-microsoft-surface-tablet-compatibility.

Recent versions of DisplayPort include the ability to split to multiple displays from one DisplayPort connection using Multi-Stream Transport (MST).

Although you can connect the MST hub to any DisplayPort (DP) or Mini DisplayPort (mDP) connection, the graphics card in the computer must support MST to use a MST hub.

MST was added for DisplayPort 1.2 and includes support for High Bit Rate 2 (HBR2), which is required to operate MST. However, some manufacturers may not have implemented full support for MST.

If you are unsure if your computer supports MST, try the following:

  • Research the technical specifications of the DisplayPort sources for MST.

  • If no information is available for your product, contact the manufacturer for assistance.

  • Use USB video adapters found on StarTech.com as an alternative method to obtain multiple displays.

On a system with MST compatibility, multiple monitors are detected when they are connected to the hub. Multiple monitors can be used in the following configurations:

  • Extended: for separate, independent desktops/displays.

  • Spanned: a large, wide resolution that spans or spreads across multiple displays.

  • Duplicated: mirrored images on each display.

When a graphics card does not support MST, the hub will duplicate (mirror) the display across all three of the connections. Only one monitor will show in the displays configuration of your system.

You cannot use an MST hub to increase the maximum number of displays that a video card supports. For example, if your video card only supports up to three displays, your display limit will still be three displays even if you use an MST hub.

If you have multiple MST hubs connected to the same computer and are experiencing display issues, you should check your video card to make sure that it can support the number of displays that you are using in your setup.

If you use an MST hub in your setup, your video card also needs to be compatible with MST technology. For more information, refer to the following FAQ: https://www.startech.com/faq/mst-hubs-gpu-compatibility.

Although most Microsoft Surface tablets include Mini DisplayPort, the capabilities vary depending on the tablet model. For more information about MST hub compatibility, refer to the following table:

Model Mini DisplayPort MST Graphics card
Surface RT No No NVIDIA Tegra 3
Surface Pro Yes (DP 1.1) No Intel HD Graphics 4000
Surface 2 No No NVIDIA Tegra 4
Surface Pro 2 Yes (DP 1.2) Yes Intel HD Graphics 4400
Surface 3 Yes (DP 1.1) No Intel HD Graphics (Cherry Trail)
Surface Pro 3 Yes (DP 1.2) Yes

Intel HD Graphics 4200
Intel HD Graphics 4400
Intel HD Graphics 5000

Surface Pro 4* Yes (DP 1.2) Yes

Intel HD Graphics 515
Intel HD Graphics 520
Intel Iris 540

Surface Book Yes (DP 1.2) Yes Intel HD Graphics 520
Surface Pro 2017 Yes (DP 1.2) Yes Intel HD Graphics 615 (m3)
Intel HD Graphics 620 (i5)
Intel Iris Plus Graphics 640 (i7)

*The Surface Pro 4 does not work with an MST hub when the Surface Pro 4 is connected to the Surface Dock. If the Surface Pro 4 is directly connected, it will work with an MST hub.

In order to access the full functionality of the hub, you need to install the latest drivers provided by Microsoft Update.

Note: You cannot use an MST hub to increase the maximum number of displays that a video card supports. For example, if your video card only supports up to three displays, (as is the case with all of the Surface models listed above), your display limit will still be three displays even if you use an MST hub.

Compliance and safety

Compliance letters

  • RoHS
    • Language: English
  • WEEE
    • 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

(16 reviews)
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(5 Stars)

Works Great

By: dstroope - 11/11/2014
I bought this to connect to 24" 1080P monitors to my SP3/dock. Works well, and has no problem with the the monitors native resolution. Plug and Play so setup was as easy as plugging everything in.
| Helpful?
(2 Stars)

Sketchy at best

By: pwaters - 03/10/2015
I bought the hub doesn't work as well as promoted on StarTech web site. Sketchy at best with setting up with my Surface Pro3. Every day is an adventure to get my two 27” BenQ monitors up and displaying. I am constantly resetting my display options to get it to work. This waste time in the morning up to an hour a day. In a nut shell doesn’t work out of the box.
| Helpful?
(4 Stars)

So far so good

By: SurfacePro - 04/13/2015
Just got it and it has been plug and play with my Surface Pro 3. I haven't tested daisy chaining Display Port or use with a variety of monitors, but so far it displays to my Dell 28" P2815Q via Display Port as expected. I may bump up/down the stars after I test it some more.
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(1 Stars)

Useless with ASUS N550JK and 2x acer CB280HK

By: wombat - 05/18/2015
Does not work reliably with Windows 8.1 on ASUS N550JK and 2x acer CB280HK. There must be a magic order of actions to power it on, plug in the monitors and recognise them in windows. But it isn't working for me. I got it to work only once, and it was stunnign with two 4K2 displays in portrait mode. Buyt I walked away from my desk to get lunch and it hasn't worked since. your mileage may vary. but prepare for no miles at all.
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Customer Support, Customer Support on 25/05/2015 11.36.11
Hello, Thank you for taking time to leave some feedback on the MSTMDP123DP. We’re sorry to hear you had a poor experience with the unit and would like to help. The MSTMDP123DP hub should function in your setup with two 4K monitors, following the normal setup order. Since the hub is working intermittently for you, it sounds like it may be faulty; we apologize for this inconvenience. It seems you have already spoken with our Technical Advisors regarding this issue, and it was recommended to exchange the hub. If you have done so, could you inform us of your experience with the new unit? Quality is very important at StarTech.com and we take issues like this seriously. If you require further assistance, please feel free to get in touch with us and kindly reference case number 377-231494. Thank you, Customer Support StarTech.com http://www.startech.com/techsupport
(4 Stars)

Works great, with a catch.

By: Sparkie - 09/04/2015
I bought several of these from CDW. Lots of informative pics including one with the Surface Pro. What wasn't mentioned is the included (but not pictured) A/C adapter is required to power the splitter. Not a big deal for some, but in my case was an issue.
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(1 Stars)

Only detects one monitor at a time

By: scubajim - 09/20/2015
This had promise but on a surface pro 3 w/o docking station, the MSTMDP123DP only detects 1 of 2 27" Samsung displays.
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Customer Support, Customer Support on 08/10/2015 17.55.05
Dear Jim, Thank you for taking the time to review our MSTMDP123DP MST Hub. We are sorry to hear you are experiencing this issue and we would like to offer some help. This model of MST hub has a "Scan" button located on the back, does pressing this remedy your display issue? Do you have any other cables or monitors you can test with our hub? If possible are you able to test the hub with other computer systems that would be able to support MST? To ensure your Surface Pro 3 or any MST enabled device performs optimally with the MSTMDP123DP, please be sure you are using the latest system firmware and drivers for your video card. These can be found through Windows updates, and depending on the update settings may be found in the "Optional Updates" section. Are you able to provide the exact model number for the displays being used, which version of the Surface Pro 3 is used, and the type of cabling/adapters that are being used to connect to the displays? We are always here to help with our free lifetime technical support. If you would like further assistance with our MST hub then please get in touch with us and reference case #332-284735 so we can further assist you. You can also reply here and we will be sure to follow up. Thank You, Customer Support StarTech.com http://www.startech.com/support
(5 Stars)

Overall happy with product, works as I expect

By: Steve H - 08/24/2016
I received this splitter after agreeing to provide an honest, accurate review of this product. I work in an IT field and my job frequently requires the use of multiple monitors on more than one computer so I was looking forward to giving this product a try. I`ve been using it for just over a week with one of my work laptops that has a mini-display port. It runs Windows 7. I typically use three monitors at once with this machine. This is easy to do at work where I have a docking station. At home I do keep a docking station around but it takes up too much space on my desk so I`m not a big fan. I like this device as it is relatively quite small. There isn't much to do in regards to setting it up. I just plugged in the display port cables from my monitors into the splitter and the mini display port into my laptop. The device does need to be plugged in for power. It comes with several different adapters for power. I live in the US so I simply had to identify the correct adaptor for the splitter and attach it. In all it was very easy. I've been using it for a week now. I haven't noticed any problems. My monitors all display as they should. If I had one request, it would be to make the Mini DisplayPort cable longer. It`s a fairly minor concern.
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(4 Stars)

It worked

By: tater5001 - 08/28/2016
So I received a free sample of the Mini DisplayPort to DisplayPort Multi-Monitor Splitter - 3-Port MST Hub in order to complete a review. And first things first, while DisplayPort is an extremely underrated technology, HDMI has become the standard for HD display chords, so a majority of people will find the HDMI version of this product to be significantly more useful. That said this product aimed to turn a single mini DisplayPort into 3 DisplayPorts, allowing for a computer to use 3 additional monitors. This splitters gets the job done and it succesfully integrates into Windows 10 display settings extremely well. Additionally, the product has a solid, compact design, which you notice right when you take it out of the box. One negative is to use the splitter, you have to use its included power supply, which is pretty bulky. My favorite secondary feature was the multiple power adapters, which allowed the splitter to be used all over the globe! And as far as design, the material used for the cord leading to the mini DisplayPort was extremely firm and stiff, which lead me to believe it would last a long time (I`ve only had the product for 3 weeks). Lastly, I never needed to use the integrated scan function and there wasn`t any instructions in the provided manual, so that seems like a wasted capability. Overall, StarTech`s Mini DisplayPort Splitter worked as advertised and successfully expanded one mini DisplayPort to 3 DisplayPorts!
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(4 Stars)

By: G Wilds - 08/29/2016
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(4 Stars)

Useful once I got it working - needed an adapter

By: Nicole D - 08/31/2016
The Startech display port works as expected once I got it up and running. I found that I needed a HDMI adapter which would have been nice to have been included in the instructions. I found out by visiting the Startech.com website. Then I went on a quest to find the right adapter which was hard to discern from the site. I saw the picture of it but no link to the actual product or product number. I ended up using the website Help chat which was helpful but I was told to get a Display Port to HMDI converter cable that in the end didn`t work. Luckily I found the related adapter easily on a popular ecommerce website (since it was an option on the cable product page) and ordered that at the same time figuring I would try that if the cable did not work. Btw, if you need to connect to HDMI the correct adapter is StarTech.com DP2HDMI2 DisplayPort to HDMI Video Adapter Converter Model Number: DP2HDMI2 . Knowing this ahead of time would have saved me a lot of time and frustration. It also would be helpful if this display port had a power indicator on it. As I was troubleshooting I found myself wondering if it was getting power with no way to tell for sure (until I finally got it working).
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(4 Stars)

Increased Productivity

By: soccergeek12 - 08/31/2016
I absolutely love the 3-Port Multi Monitor Mini DisplayPort to DisplayPort MST Hub that I was selected to try out for free. As a software developer this allowed me to easily have multiple software programs open to write code, test the code on a separate screen, and then check the data on the third screen. I`m sure my boss will like me being more productive as well. I`ve only had this product a little while and I`m already wondering how I ever was able to do it all with just one screen. Once I got all the correct adapters for my monitors the setup was a breeze. I will definitely be recommending this to others I work with as well.
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(4 Stars)

Nice product! Works perfectly

By: Grant - 09/07/2016
I received a free sample of the Star Tech Mini Display Port to Display Port MST Hub to review and found it to be of very good quality. It worked perfectly on my Elitebook laptop at work with Windows 7. I just plugged in all monitors (3 24" monitors) , then plugged it into the computer. There are a few noises when they are booting up, but then all four monitors (including the laptop) working perfectly. It took a little while to configure the resolutions and positions and setting the wallpapers for all the monitors, but is was very easy. I was able to play 1080p 60fps videos on all four monitors simultaneously without any issues. Overall I would give this item a positive rating.
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(5 Stars)

Great Splitters

By: MazzucaJoe92 - 09/08/2016
I received this free mini display port splitter to review and it`s been working great - no problems at all. I typically run 2 monitors, but this has allowed me to bump that up to 3 - super useful. Picture quality has been great throughout the time that I`ve used this product. Easy to use, just plug it in and it works, way better for multitasking.
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(1 Stars)

Only one monitor with Surface pro 3

By: Czer - 12/07/2018
Just got this in and installed it on my Surface Pro 3 - it supports a second monitor - and the third monitor winds up displaying the same as the second (assuming the surface pro display is monitor one). Bought this because I assumed Star Tech would simply work - very disappointed.
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Stefan , Customer Support on 13/12/2018 12.09.49
Hello! Thank you for reviewing our MSTMDP123DP, we apologize it is not working for you. A few steps to try first here are to make sure the surface is fully updated with Windows updates, and to see if you can change the second external monitor to "Extended" instead of mirrored in your Windows Display Settings. There is also a scan button on the back of the unit that can help with detection issues. Please reach out to our support team at StarTech.com/chat or 1 800 265 1844 . our Technical Advisors are available 24/5 to assist! Thank you,
(1 Stars)

Very Disapointing

By: patcar13 - 04/13/2019
I bought this to work with the Surface Studio 1 and the Samsung CHG90. it is a no go and there is very little information about which display adapters/driver pairs actually work with the device. I am sure when it works it is great, but when it does not it takes hours to test everything to find there is not solution.
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Stefan, StarTech.com Support on 22/04/2019 08.08.21
Thank you for reviewing our MSTMDP123DP, we apologize it is not working well. One potential issue here is the monitor you have is able to use very high resolution and refresh rates (3840x1080 @144Hz native). If possible, try to bring the refresh rate to 60Hz or below to ensure the bandwidth of the MST hub is not exceeded. In addition, if you were wanting to connect just that one monitor, using a Mini DIsplayPort to DisplayPort adapter may perform better than an MST hub, as that would allow for higher refresh rates and resolutions direct to your Surface. If you still encounter issues please call 1 800 265 1844 or click the green chat live button in the top left of the website.
(1 Stars)

Does not work

By: Winglessbat - 11/21/2019
I have 3 HP ZR2440w monitors, only 2 came up full HD. The 3rd monitor came up VGA mode.
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Matt, Customer Support on 28/11/2019 16.45.01
We understand your disappointment and apologize that you're not seeing the performance you expected from our MSTMDP123DP. Issues like this may occur due to limitations of the internal graphics card on your PC and one way to verify where the issue occurs is to try only connecting the monitor having a problem and one other display, or swapping which display is connected to each port on the MST hub to see if the problem follows the display, the port on the MST hub, or goes away completely with only 2 displays connected. We'd be happy to help you find out what's causing this problem and we can be reached at www.startech.com/support. Our Technical Advisors are available 24 hours a day, 5 days a week to provide assistance.
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