4K HDMI 2-Port Video Splitter – 1x2 HDMI Splitter – Powered by USB or Power Adapter – 4K 30Hz
Split an HDMI audio/video source to two separate HDMI Displays, with support for HDMI 4K, and Power through a nearby USB port.
Product ID: ST122HD4KU
The ST122HD4KU 2-port video splitter supports Ultra HD (4K) ensuring astonishing picture quality, four times the resolution of high-definition 1080p, while sharing a 4K HDMI video source between two HDMI displays.
The 4K splitter is backward compatible with previous HDMI revisions, supporting 1080p / 720p HDMI video resolution devices such as computers, Blu-ray players and cable TV set-top boxes. Even if you don't require 4K video today, the video splitter ensures you'll be ready to take advantage of tomorrow's display technology while still working with the devices you already have. Plus, this splitter supports 3D, enabling you to use the splitter with your stereoscopic 3D video source on active or passive 3D displays.
For a hassle-free setup you can power the HDMI splitter with the included USB cable, or power adapter depending on which is most convenient for you. Plus, the splitter features a built-in HDMI source cable, which lets you connect it directly to your HDMI source without the expense of additional cabling.
The ST122HD4KU is backed by a StarTech.com 2-year warranty, and free lifetime technical support.
- Display a 4K HDMI signal on two different HDMI displays
- Use to showcase 4K displays, by outputing the same video source on multiple displays
- Display corporate information or advertising on multiple displays at a shopping center
- Use to display a stock ticker or promotional information at financial institutions
- Present the same information on multiple displays in waiting rooms in healthcare facilities
The StarTech.com Advantage
- Hassle-free setup with your choice of USB or power adapter, and built-in HDMI source cable
- Take advantage of the newest video technology, harnessing the quality of 4K video devices
|Industry Standards||HDMI 1.4|
|Audio Specifications||7.1 Surround sound|
|Maximum Digital Resolutions||4K @ 30 Hz|
|Supported Resolutions||3840x2160 (4K)
|Wide Screen Supported||Yes|
|Connector A||1 - HDMI (19 pin) Male|
|Connector B||2 - HDMI (19 pin) Female|
|Input Current||0.5 A|
|Input Voltage||100 - 240 AC|
|Output Current||2 A|
|Output Voltage||5 DC|
|Power Consumption (In Watts)||10|
|Power Source||AC Adapter Included|
|Product Height||1.8 cm [0.7 in]|
|Product Length||62 cm [24.4 in]|
|Product Width||50 mm [2 in]|
|Weight of Product||78 g [2.8 oz]|
|Package Height||56 mm [2.2 in]|
|Package Length||15.6 cm [6.1 in]|
|Package Width||23 cm [9.1 in]|
|Shipping (Package) Weight||396 g [14 oz]|
|What's in the Box|
|Included in Package||1 - HDMI splitter|
|1 - universal power adapter (NA/EU/UK/AU)|
|1 - USB power cable|
|1 - instruction manual|
Split an HDMI audio/video source on two separate HDMI Displays simultaneously, with support for resolutions up to 4K
Split an HDMI® source with accompanying audio to 2 displays
Split an HDMI audio/video source on four separate HDMI displays simultaneously, with support for resolutions up to 4K
Frequently Asked Questions
Before You Buy
This device outputs HDMI video signals. If you have a display or video destination that uses another type of video connection, there are ways that you can convert the video signal or connection. These options are outlined below and organized by the target connection.
When you consider whether to convert an HDMI video signal to another connection type, it is important to know if the media that is being converted from the HDMI video connection is protected by High-bandwidth Digital Content Protection (HDCP). If the media is protected by HDCP, you cannot convert to analog video connections because they do not support HDCP. You may experience this issue when you use devices like Blu-ray players, DVD players, and certain gaming consoles.
|VGA||HDMI to VGA: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=VGA.|
|DisplayPort||HDMI to DisplayPort: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=DisplayPort.|
This device has an HDMI input port. If you have a video source that uses another video connection, there are options available to convert the video signal or connection. These options will be outlined below for each video source connection.
DVI to HDMI video converters: https://www.startech.com/Cables/Audio-Video/Video-Adapter/HDMI-Cable-Adapters/.
DVI to HDMI video cables: https://www.startech.com/Cables/Audio-Video/HDMI/HDMI-to-DVI/.
DisplayPort to HDMI passive converters: https://www.startech.com/AV/Displayport-Converters/DP-HDMI/?filter_CONVERTTYPE=Passive.
DisplayPort to HDMI active converters: https://www.startech.com/AV/Displayport-Converters/DP-HDMI/?filter_CONVERTTYPE=Active.
DisplayPort Passive and Active Conversions
The converter that you require depends on the type of DisplayPort video source that you are using. For more information about converting DisplayPort video signals, refer to the following FAQ: https://www.startech.com/faq/DisplayPort_Converter_DP_Multi_Mode.
When you troubleshoot issues with a video splitter, 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 source (such as a DVD player or computer)
Video destination (such as a monitor or projector)
Note: When you are testing setup components, you should avoid using video adapters. For example, if you are converting a VGA source to HDMI for use with an HDMI splitter, you should use an HDMI source when you test the components.
To test your setup components, try the following:
Use the cable, video splitter, video source, and video destination in another setup to see if the problem is with the components or the setup.
Use a different cable, video splitter, video source, and video destination 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 video source and video destination, it is recommended that you do the following:
Remove the video splitter from your setup and test to make sure that the video source and video destination work together without the video splitter.
Test to make sure that the video source and video destination work together at the resolution that you want to use.
Note: In order for your setup to work properly, the video source, splitter, and destination all need to support the resolution that you are using.
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:
Unplug all of the video connections.
If the splitter is powered, power cycle the splitter.
Plug in all of the video connections again.
Make sure that the first video connection plugged in is the one that you want to be the master port.
You might encounter resolution issues when you use a video splitter. This can occur because the information and resolution on one display are being copied and sent to each of the additional displays. You should make sure that all of the displays that you are using can support the output resolution. For more information, refer to the following FAQ: https://www.startech.com/faq/video_splitters_correct_port_usage
Compliance and Safety
- 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.