Product ID: MSTDP122DP
This MST hub lets you connect two monitors to your DisplayPort™ (DP) 1.2 equipped Windows® laptop or desktop. It’s USB powered, so the only thing you'll need to operate the hub is your computer.
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 two additional displays to your computer, which makes multitasking much easier.
With the MST hub, you can use DisplayPort video adapters and cable adapters that enable you to connect HDMI, VGA or DVI displays. This ensures your MST hub will be compatible with virtually any television, monitor or projector. The hub is VESA and DisplayPort certified to support DP 1.2 enabled systems, for seamless integration with your existing video equipment.
Using the MST hub, you can extend your desktop onto additional monitors and stream independent content to each display, giving you the freedom to multitask and increase your productivity. You can also mirror the same image onto multiple displays for remote viewing applications such as digital signage.
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 MST hub will act as a splitter, automatically mirroring your video source across all displays. Resolution limitations apply.
The MSTDP122DP supports plug-and-play installation for a hassle-free setup, and is backed by a StarTech.com 3-year warranty and free lifetime technical support.
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.
|Warranty Information||Warranty||3 Years|
|Connector(s)||1 - Connector A||DisplayPort (20 pin)|
|2 - Connector B||DisplayPort (20 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)|
|Hardware||Active or Passive Adapter||Active|
|AV Input||DisplayPort - 1.2|
|AV Output||DisplayPort - 1.2|
|Chipset ID||MegaChips - STDP4320|
|Packaging Information||Package Height||3,0 cm [1,2 in]|
|Package Length||17,2 cm [6,8 in]|
|Shipping (Package) Weight||134,0 g [4,7 oz]|
|Package Width||14,1 cm [5,6 in]|
|Performance||Audio Specifications||DisplayPort - 5.1 Channel Audio|
|Maximum Cable Distance To Display||2 m [6,6 ft]|
|Maximum Digital Resolutions||3840 x 2160 @30hz|
1280x720 (High-definition 720p)
1920x1080 (High-definition 1080p)
3840 x 2160 (Ultra HD 4K) @30hz
|Wide Screen Supported||Yes|
|Physical Characteristics||Weight of Product||52,0 g [1,8 oz]|
|Cable Length||19 cm [7,5 in]|
|Product Length||25,0 cm [9,8 in]|
|Product Width||5,8 cm [2,3 in]|
|Product Height||1,4 cm [0,5 in]|
|Software||OS Compatibility||Windows 11
Windows 10 (32/64)
Windows 8/8.1 (32/64)
|Special Notes / Requirements||Note||DisplayPort 1.2 with MST+HBR2 support from the GPU is required for independent display output|
|What's in the Box||1 - Included in Package||2-port DP MST Hub|
|Quick install guide|
Connect your DVI monitor to a DisplayPort equipped computer
Connect your HDMI® monitor or HDTV to a DisplayPort® equipped computer
Connect a VGA monitor to a DisplayPort-equipped PC
DisplayPort 1.2 | Multi-Monitor Solution | Plug & Play Connectivity
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.
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.
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.
Note: Some 4K displays, even if set to 1920x1080 resolution, will still reserve the full 4K bandwidth. As a result, this may prevent some displays from outputting a video signal or prevent certain resolutions from being available on the other displays.
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.
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
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.
Windows 10 / 8
Windows 7 / Vista
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.
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
|Surface Pro 4*||Yes (DP 1.2)||Yes||
Intel HD Graphics 515
|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.
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