3 Port Multi Monitor Adapter - DisplayPort 1.4 to 3x 4K DisplayPort Video Splitter - Dual or Triple 4K - DisplayPort MST Hub for Multiple Monitors - For Windows PCs Only

3 x 4K | Multi-Monitor Video Splitter | Windows® | HDR

Product ID: MST14DP123DP

4 stars (1 reviews) |
  • MULTI MONITOR ADAPTER FOR WINDOWS: Triple DisplayPort MST hub drives up to 3x DisplayPort monitors in extended or duplicate mode using a DP port on Windows desktop PCs or laptops | Not compatible with macOS
  • DISPLAY RESOLUTION: 3-Port DisplayPort MST hub supports up to 3x 4K 30Hz (UHD) on 3 monitors | or dual 4K 60Hz | or single 5K 60Hz + 1080p | Supports 3 ultrawide displays up to 3440x1440 | HDR for high contrast color | Works w/ DP 1.2 (lower resolutions)
  • COMPATIBILITY: Triple monitor DisplayPort MST video splitter works with laptops, computers or desktop graphics cards | Requires host system with DP 1.4/HBR3/MST or later from HP, Dell & Lenovo and AMD, Nvidia & Intel video cards
Your price
¥17,177 JPY excl.
¥18,895 JPY incl.

This 3-port DisplayPort MST hub lets you create a high-performance workstation by connecting three DisplayPort monitors to your DisplayPort device, helping to increase and maximize your productivity. The multi-monitor splitter supports High Dynamic Range (HDR) and provides sharper images with enhanced video. 

Incredible Picture Quality 

Supporting four times the resolution of 4K, this DP 1.4 MST hub delivers the stunning quality of UHD at resolutions up to 7680×4320 at 30Hz on a single monitor and supports multi-monitor applications at lower resolutions and refresh rates, enabling a dynamic work environment whether you’re in the office, at home or traveling.  


Display 1
Display 2
Display 3

8K (7680x4320) @ 30Hz



5K (5120x2880) @ 60Hz

1080p (1920x1080) @ 30Hz


4K (3840x2160) @ 60Hz

4K (3840x2160) @ 30Hz

4K (3840x2160) @ 30Hz

2K (2560x1600) @ 60Hz 2K (2560x1600) @ 60Hz 2K (2560x1600) @ 60Hz
1080p (1920x1080) @ 60Hz 1080p (1920x1080) @ 60Hz 1080p (1920x1080) @ 60Hz

Both your source and destination must support DisplayPort 1.4 in order to achieve maximum resolution (8K 30Hz). 

Lower resolutions and refresh rates may also be supported.


Multi-Tasking Made Easy

This DisplayPort to 3x DisplayPort MST hub enables you to connect three displays to your DP computer, making multi-tasking much easier. Using this multi-monitor video splitter, you can mirror your display onto multiple monitors, stream independent content to each display or extend your screen to create a video wall effect.  


productivity software displayed on three monitors


Hassle-Free Setup

Multi-stream transport offers an easy setup, by natively working on any Windows device. It offers plug-and-play installation with no drivers or software required. Additionally, the DisplayPort MST hub is bus-powered (with the included micro-USB cable), creating an ultra-portable solution for business and IT professionals. 

MST14DP123DP is backed by a StarTech.com 3-year warranty, and free lifetime technical support. 


  • Stream or extend your desktop onto three additional UHD monitors, TVs or projectors
  • Display crisp digital signage with a panoramic video wall
  • Create eye-catching visuals for photography and videography
  • Stream high-resolution, life-like content on multiple monitors

Partner Numbers

  • SB C&S S6A1006710
  • SYNNEX Japan ZU2024S
  • UPC 065030884051


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


Warranty Information Warranty 3 Years
Connector(s) 1 - Connector A DisplayPort (20 pin)
3 - Connector B DisplayPort (20 pin) Female
Environmental Operating Temperature -20°C to 60°C (-4°F to 140°F)
Storage Temperature -20°C to 80°C (-4°F to 176°F)
Humidity 5% to 90 % RH (no condensation)
Hardware Active or Passive Adapter Active
AV Input DisplayPort - 1.4
Ports 3
AV Output DisplayPort - 1.4
Audio Yes
Chipset ID Synaptics VMM5330
Packaging Information Package Height 3.0 cm [1.2 in]
Package Length 17.0 cm [6.7 in]
Shipping (Package) Weight 132.0 g [4.7 oz]
Package Width 14.2 cm [5.6 in]
Performance Audio Specifications DisplayPort - 7.1 Channel Audio
Video Revision DisplayPort 1.4
Maximum Cable Distance To Display 2 m [6.6 ft]
Supported Resolutions DisplayPort: 7680x4320 (8K) / 30Hz
Wide Screen Supported Yes
Physical Characteristics Product Height 1.4 cm [0.6 in]
Product Length 4.3 cm [1.7 in]
Weight of Product 55.0 g [1.9 oz]
Product Width 10.5 cm [4.1 in]
Color Black
Material Plastic
Power Power Source USB-Powered
Software OS Compatibility Windows 10 (32/64)
Windows 8/8.1 (32/64)
Windows 7(32/64)
What's in the Box 1 - Included in Package DisplayPort MST Hub
Micro-USB Power Cable



DC Power Adapter - 5V, 3A

Replace your lost or failed power adapter

Your price
¥2,489 JPY excl.
¥2,738 JPY incl.
Your price
¥2,175 JPY excl.
¥2,393 JPY incl.
Your price
¥3,261 JPY excl.
¥3,587 JPY incl.


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Product Support

Talk to an Advisor

We are always ready to assist you with any questions you may have.

Live Chat (opens in new window)

Frequently Asked Questions


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.

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. 

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

(1 reviews)
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1 - 1 of 1 Reviews
(4 Stars)

lacks a USB power plug

By: Bobby Bani - 03/27/2020
I've bought the previous versions of this MST hub, each came with a power plug. This one lacks a power plug. For the price, a bit disappointing. How easy it would be to include a small power brick in the box.
| Helpful?

By: mike1620 - 10/13/2021
For the price, I suppose they could include a power brick, but given the number of plugs and USB-powered devices I have at my workstation, the last thing I need is another power brick that needs a full outlet. I have a drawer full of unused power bricks. I don't need another. I've got my displayport adapter plugged into a 12-port USB hub. This greatly reduces the number of power bricks and outlets used and simplifies cable management.
| Helpful?
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