StarTech.com 4K HDMI 2-Port Video Splitter – 1x2 HDMI Splitter – Powered by USB or Power Adapter – 4K 30Hz

Manufacturer: Startech | Model: ST122HD4KU | Product ID: 6125 | Warranty: 2 Years
£53.76 (inc. VAT)
41 in stock
100% Money Back Guarantee - Risk Free

Product Technical Specification

Ports & interfaces
Video port typeHDMI
Video out2x HDMI
HDMI version1.4
Video ports quantity2
DC-in jackYes
Features
Product colourBlack
Maximum resolution3840 x 2160
Full HDYes
Maximum refresh rate30
Supported graphics resolutions1280 x 720 (HD 720),1920 x 1080 (HD 1080),1920 x 1200 (WUXGA),2560 x 1600 (WQXGA)
CertificationREACH, FCC, CE
Network
Ethernet LANNo
Power
AC input voltage100-240
Input current0.5
Output voltage5
Output current2
USB poweredYes
Weight & dimensions
Width50
Depth620
Height18
Weight235
Packaging data
Package width230
Package depth156
Package height56
Package weight396
Packaging content
ManualYes
Cables includedUSB
AC adapter includedYes
Included power plug typesAU,EU,NA,UK
Sustainability
Sustainability certificatesRoHS
Technical details
Audio supportYes
Logistics data
Harmonized System (HS) code85176990

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Wed 26th Aug 2026 to Sat 29th Aug 2026
Business Express
£6.95
Business Express

Business Express

Estimated delivery date: Tue 25th Aug 2026 to Thu 27th Aug 2026
View all Delivery Options & International Rates
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.

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
Ports & interfaces
Video port typeHDMI
Video out2x HDMI
HDMI version1.4
Video ports quantity2
DC-in jackYes
Features
Product colourBlack
Maximum resolution3840 x 2160
Full HDYes
Maximum refresh rate30
Supported graphics resolutions1280 x 720 (HD 720),1920 x 1080 (HD 1080),1920 x 1200 (WUXGA),2560 x 1600 (WQXGA)
CertificationREACH, FCC, CE
Network
Ethernet LANNo
Power
AC input voltage100-240
Input current0.5
Output voltage5
Output current2
USB poweredYes
Weight & dimensions
Width50
Depth620
Height18
Weight235
Packaging data
Package width230
Package depth156
Package height56
Package weight396
Packaging content
ManualYes
Cables includedUSB
AC adapter includedYes
Included power plug typesAU,EU,NA,UK
Sustainability
Sustainability certificatesRoHS
Technical details
Audio supportYes
Logistics data
Harmonized System (HS) code85176990

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Buykingston order despatch times:

We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.

These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).

We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.

Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.

Despatch times do not apply to UK public holidays.

Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.

Our warehouse reserves the right to upgrade the delivery method you select on your order.

Our available delivery options*

Contact us for a shipping quote.

*All delivery times are estimated unless stated.

Product Returns Note

Buykingston offers a simple, hassle-free returns policy. If for whatever reason you are not happy with the item purchased, you can return it to us within 14 days of receipt for a refund. This applies to items purchased direct through Buykingston only.

Our 14 Day Returns Money Back Guarantee:
For items returned in resaleable condition, with all original packaging. If an item has been opened for inspection but shows signs of use beyond that, a deduction may apply to reflect the reduced value — see our full Terms & Conditions (Section 12) for details.

Some items are excluded from our money-back guarantee unless they have developed a fault. These include:

- Headphones
- Earphones
- Custom made and designed products, such as flash memory products with custom logos on them, e.g. USB flash drives and memory cards with your own logo

Returns FAQs

What is your returns criteria?
14 days from date of receipt, or expected date of receipt on non-tracked items.

How do I go about returning my order?
Please contact us via our contact page with your order number. We will provide you with an RMA number and return instructions, including your return deadline and whether a freepost label applies to your order.

Do I need to contact you before returning my order?
Yes, to obtain an RMA number before sending anything back.

Does my item have to include its original packaging?
Yes, to qualify for our 14 day money-back guarantee. For faulty items, we understand you may no longer have the original packaging.

Who pays for return postage?
If your item is faulty, damaged, or not as described, we cover reasonable return postage, or provide a freepost label where available. If you are returning an item for another reason (including simply changing your mind), you are responsible for return postage unless we have expressly confirmed a freepost label in your RMA email — we recommend using a tracked and insured service for items of significant value.

Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer directly for assistance.

Please ensure you have read and comply in full with Sections 11–13 of our Terms & Conditions.