StarTech.com

DisplayPort to HDMI Multi-Monitor Splitter - 3-Port MST Hub

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

Product ID: MSTDP123HD

  • Maximize your productivity by connecting up to three independent displays to your computer using the MST Hub
  • Connect your DisplayPort computer to HDMI televisions, monitors or projectors, avoiding the hassle of additional HDMI adapters
  • Increase external video performance with support for resolutions up to 4K
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  • VESA and DisplayPort certified
  • Compatible with DP 1.2 graphics cards such as AMD Radeon with Eyefinity Technology
  • Plug-and-play installation
200,99 € EUR exc VAT
251,24 € EUR inc VAT
Not Available
May be in stock with partners
Where To Buy

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Overview

This MST hub lets you connect three HDMI® monitors to your DisplayPort™ (DP) 1.2 equipped Windows® laptop or desktop.

Increase productivity with multiple screens

The newest generations of computers are more portable than ever, which often means that you’re left with fewer video outputs and smaller integrated screens. This MST hub solves both of these problems by letting you connect three additional displays to your computer, which makes multitasking much easier. 

Increase Productivity with multiple screens

Configure your displays for any environment

Using the MST hub, you can extend your desktop onto additional monitors and stream independent content to each display. You can also mirror the same image onto multiple HDMI televisions or projectors for remote viewing applications such as digital signage.

productivity software displayed on three monitors

 

Enjoy amazing video quality without draining system resources

MST technology uses your existing video card to minimize the use of system resources while delivering Ultra HD 4K resolutions. This unprecedented performance makes MST perfect for high-resolution applications such as graphic design, gaming and medical imaging.

Note: When using a DisplayPort 1.1 video card the MSTDP123HD will act as splitter, automatically mirroring your video source across all displays. Resolution limitations apply.

The MSTDP123HD supports plug-and-play installation for a hassle-free setup, and is backed by a StarTech.com 2-year warranty and free lifetime technical support.

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. 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. Some monitors limit available resolution

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 - 43%

Note: Exceeding 100% will reduce functionality.

Examples of Supported Resolution Configurations

Screen 1 Resolution
Screen 2 Resolution
Screen 3 Resolution
Total % of Bandwidth
1920x1200 @60hz (30%) 1920x1200 @60hz (30%) 1920x1200 @60hz (30%) 90%
2560x1440 @60hz (35%) 2560x1440 @60hz (35%) 1920x1200 @60hz (30%) 92%
2560x1600 @60hz (38%) 2560x1600 @60hz (38%) 1920x1080 @60hz (22%) 98%
3840x2160 @30hz (43%) 1920x1200 @60hz (30%) 1920x1080 @60hz (22%) 95%
3840x2160 @30hz (43%) 3840x2160 @30hz (43%) None 86%

Examples of Unsupported Resolution Configurations

Screen 1 Resolution
Screen 2 Resolution
Screen 3 Resolution
Total % of Bandwidth
2560x1600 @60hz (38%) 2560x1600 @60hz (38%) 1920x1200 @60hz (30%) 106%
3840x2160 @30hz (43%) 2560x1600 @60hz (43%) 1920x1200 @60hz (30%) 116%
3840x2160 @30hz (43%) 2560x1600 @60hz (43%) 2560x1440 @60hz (35%) 121%
3840x2160 @30hz (43%) 3840x2160 @30hz (43%) 3840x2160 @30hz (38%) 124%

Applications

Use one screen for reference data such as websites, while composing in another screen

Dock your DP 1.2 device and add three high-resolution displays at your workstation

Create a panoramic video wall for HDMI digital signage applications using your DisplayPort computer

Edit images, video or audio clips across three displays in any orientation or resolution

Perfect for spanning a spreadsheet or worksheet across three displays, to avoid side-scrolling

Enjoy the panoramic views built into games and display helpful codes and walk-through data on a third display, at the same time

Technical Specifications

Warranty Information
Warranty 2 Years
Hardware
Active or Passive Adapter Active
Audio Yes
Chipset ID MegaChips - STDP4320
Converter Type MST Hub
Output Signal HDMI
Ports 3
Performance
Maximum Digital Resolutions 3840 x 2160 @30hz
Supported Resolutions 1024x768
1280x720 (High-definition 720p)
1920x1080 (High-definition 1080p)
1920x1200
2560x1440
2560x1600
3840 x 2160 (Ultra HD 4K) @30hz
Wide Screen Supported Yes
Connector(s)
Connector A 1 - DisplayPort (20 pin) Male Input
Connector B 1 - HDMI (19 pin) Female Output
Software
OS Compatibility Windows 10, 8.1, 8
Power
Center Tip Polarity Positive
Input Current 0.5 A
Input Voltage 110V-240V AC
Output Current 3A
Output Voltage 5 DC
Plug Type N
Power Consumption (In Watts) 15
Power Source AC Adapter Included
Environmental
Humidity 50-90%
Operating Temperature 0°C to 45°C (32°F to 113°F)
Storage Temperature -20°C to 70°C (-4°F to 158°F)
Physical Characteristics
Color Black
Enclosure Type Plastic
Product Height 14 mm [0.6 in]
Product Length 114 mm [4.5 in]
Product Weight 119 g [4.2 oz]
Product Width 66 mm [2.6 in]
Packaging Information
Shipping (Package) Weight 519 g [18.3 oz]
What's in the Box
Included in Package 1 - DisplayPort to 3x HDMI MST Hub
1 - Universal power adapter (NA/EU/UK/AU)
1 - Quick install guide

Compatibility

View full OS compatibility
Windows 10, 8.1, 8

Certifications

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Accessories

Product Support

Frequently Asked Questions

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.

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

*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.