Product ID: MSTCDP123DP
This 3-port USB-C to DisplayPort MST hub lets you connect three DisplayPort monitors to your USB Type-C Windows device, conveniently helping you to maximize your productivity.
With devices becoming more portable than ever, you can be limited to fewer video outputs and confined to your small integrated screen. This MST hub solves that problem by enabling you to connect three displays to your USB-C computer, making multi-tasking much easier.
Using this USB-C to DisplayPort splitter, you can mirror your display onto additional monitors or stream independent content to each display, which makes it the ideal accessory for travel or hot-desking.
Multi-Stream Transport (MST) technology uses your existing video card to minimize the use of system resources while delivering UHD 4K resolutions for up to two monitors simultaneously. Plus, because the multi-monitor splitter can output HD 1080p on three independent displays, it’s perfect for all high-resolution applications such as graphic design and medical imaging.
MST offers an easy setup, by natively working on any Windows device that supports DP Alt Mode over USB Type-C. This USB-C multi-monitor adapter is Thunderbolt 3 compatible and offers plug-and-play installation with no drivers or software required. Additionally, this DP MST hub is powered by the USB-C port, meaning no external power cords are necessary.
MSTCDP123DP is backed by a StarTech.com 3-year warranty, and free lifetime technical support.
|Warranty Information||Warranty||3 Years|
|Connector(s)||1 - Connector A||USB-C (24 pin) DisplayPort Alt Mode|
|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)|
|AV Output||DisplayPort - 1.2|
|Chipset ID||MegaChips - STDP4320
VIA/VLI - VL100
|Packaging Information||Package Length||6.9 in [17.5 cm]|
|Package Width||5.7 in [14.5 cm]|
|Package Height||1.2 in [30 mm]|
|Shipping (Package) Weight||0.4 lb [0.2 kg]|
|Performance||Audio Specifications||DisplayPort - 5.1 Channel Audio|
|Maximum Cable Distance To Display||6.6 ft [2 m]|
|Maximum Digital Resolutions||3840x2160 @ 30hz|
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%
Note: Exceeding 100% will reduce functionality.
|Wide Screen Supported||Yes|
|Cable Length||12.7 in [322 mm]|
|Product Length||3.1 in [78 mm]|
|Product Width||2.4 in [60 mm]|
|Product Height||0.7 in [1.8 cm]|
|Weight of Product||3.0 oz [86 g]|
|Software||OS Compatibility||Windows 11, 10, 8.1, 8|
|Special Notes / Requirements||Note||Your USB-C equipped device must support video (DP alt mode) to work with this adapter|
|What's in the Box||1 - Included in Package||MST hub|
Connect your HDMI® monitor or HDTV to a DisplayPort® equipped computer
DisplayPort 1.2 | Multi-Monitor Solution | Plug & Play Connectivity
Connect your DVI monitor to a DisplayPort equipped computer
To set up a MST hub with your MST compatible system, complete the following:
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:
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.
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:
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.
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:
To check to see if Windows is detecting the monitor, on a computer that is running a version of Windows 7, do the following:
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:
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:
Open Control Panel.
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.
Click Change plan settings for the plan in use.
For both entries, change Put the computer to sleep to Never.
Click Save Changes.
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
Windows 7 and Windows Vista
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:
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.
To arrange extended displays on Windows 10, complete the following.
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.
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.
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.
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.
USB-C is a type of USB connector that is capable of supporting the following:
If using Thunderbolt 3 over USB-C, the connection is capable of additional features. For example, Thunderbolt 3 is capable of 40Gbps of total bandwidth. For more information, refer to the following FAQ: https://www.startech.com/faq/thunderbolt-3-port-capabilities.
Not all USB-C ports or devices are capable of supporting all of the features listed above, or all of the features at the maximum capabilities. If you require a specific USB-C feature, your USB host connection, cables, and device must all support the feature that you require. For more information about whether your components support specific USB-C features, refer to the information provided by the manufacturers.
This USB-C device requires that all of the following components support alternate modes:
If your host device includes a Thunderbolt™ 3 connection, this USB-C device will work with your host device.
For more information about the modes that your setup components support, refer to the information provided by the manufacturers.
Check out our review guidelines.