Name: StarTech ST121SHD30 100' Extender Kit, Includes HDMI Over Cat5e/6 UTP Transmitter, HDMI Over CAT5e/6 UTP Receiver
Brand: StarTech
SKU: STST121SHD30
Price: 75.99 USD
Availability: BackOrder
Rating: 2.71 (7 reviews)

StarTech ST121SHD30 100' Extender Kit, Includes HDMI Over Cat5e/6 UTP Transmitter, HDMI Over CAT5e/6 UTP Receiver

StarTech ST121SHD30

StarTech

Although this item is temporarily on Backorder, you can order it now and it will ship as soon as it arrives. Your card will only be charged once item is shipped.

Temporarily On Backorder

Although this item is temporarily on Backorder, you can order it now and it will ship as soon as it arrives. Your card will only be charged once item is shipped. Estimated to Ship: 09/2025.

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Adorama Protect powered by Extend is available for purchases to customers in the United States only. Not available for international or U.S. territories purchases. Adorama Protect plans are available for ABS clients.

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StarTech ST121SHD30 

Extend HDMI signals up to 100ft with StarTech ST121SHD30. Supports 1080p over Cat5e/6. Reliable performance. Shop now for seamless connectivity!

Discover the power and versatility of the StarTech ST121SHD30 HDMI over CAT5e/CAT6 Video Extender Kit. This comprehensive kit allows you to extend HDMI audio, video, and an IR remote control signal up to an impressive 100 feet (30 meters) over dual Cat5e or Cat6 cable. Designed for optimal convenience, this HDMI extender kit is powered directly via the HDMI bus, eliminating the need for any additional power adapters.Experience high-definition clarity with support for resolutions up to 1920x1080 / 1080p, accompanied by high-quality digital audio. This cost-effective HD extender is perfect for leveraging new or existing Ethernet infrastructure wiring, making it an ideal solution for both residential and commercial applications.The StarTech ST121SHD30 HDMI over CAT5e/CAT6 Video Extender Kit is designed with user convenience in mind. Since it doesn't require a power adapter, it's the perfect solution for extending an HDMI signal in areas where access to power outlets may be limited.This comprehensive kit includes both the local transmitter and remote receiver units, making it an ideal choice for point-to-point digital signage applications that demand high-quality HDMI video. The extender also works seamlessly to extend Infrared IR signals from remote controls, allowing you to control your video source from your video destination with ease.For those requiring additional distance, HDMI cables up to 32-feet (10-meters) in length can be used on the local and remote ends. Experience the freedom of extended range and high-quality video and audio with the StarTech ST121SHD30 HDMI over CAT5e/CAT6 Video Extender Kit.

I have been using this HDMI extender for a while now and it has been working well as intended. The extenders come in come in a box about the size of a box of cookies. In the box are the two extenders (sending side and receiving side) which are a little more narrow that a pack of cards, as well as two IR cables (sending side and receiving side). No power is required to use the extenders as they appear to receive power from the HDMI cable. Both ends of the extender are the same size, made of metal and with matching ports. Once all of the cables are connected properly the extender starts working in 1-2 seconds. You need to connect BOTH ethernet cables and BOTH HDMI cables for the extenders to start working. None of the cables need to match, as I tested with 1x 50ft ethernet, 1x 1ft ethernet, 1x 15ft HDMI & 1x 10ft directional HDMI cable at the same time with everything working. The only time I was able to made the extender not work is when I tried to use with 4k (there is nothing on the box that indicates it is only 1080p). The extenders work very well and quickly. I received this product in exchange for an unbiased review.

Quality extenders work quick and built to last

Great product. Simple to configure. Low Cost. Work with CAT5e or 6. Great resolution. I like the screw down tabs for use in industrial situations.

HDMI Extender

System simply refuses to work at my required distance of 20m. I've bench tested the equipment using 2m cables and it worked fine, but when connected to the 20m cables, there was no video transmission at all. I also tested the transmission over CAT5e and CAT6, but useless.

Will not work at 20m

bought it, spent a day testing it. tried everything. it failed miserably.

Doesnt work

This product only works partially. The transfer of picture and sound over LAN works as advertised. The IR extender feature of this product however only works partially, and with some major drawbacks. Constantly when trying to use the IR extender feature, the transfer of the hdmi signal breaks and the LED light on the reciever unit dies, a few seconds later the LED lights up again and the picture returns. Over time when you use this IR extender feature theres a high chance of losing hdmi signal on the reciever unit, and this interruption of picture and sound renders this feature useless.

This product only works partially as advertised

It just works, when connected correctly. 1080p over 2 Cat-5e cables can be spotty (it drops out from time to time), but using dual Cat-6 works flawlessly. Just remember that port1 to port1, and port2 to port2. Getting them crossed will not work. The IR plugs work perfectly. And for the record: The runs were 78', direct from box to box.

It wouldn't work over 50 foot of Cat6 cable. So we went down to fry's and bought a different style and it worked fine.

StarTech ST121SHD30 100' Extender Kit, Includes HDMI Over Cat5e/6 UTP Transmitter, HDMI Over CAT5e/6 UTP Receiver

Key Features

Protect your gear with Adorama Protect.* Learn more

StarTech ST121SHD30 100' Extender Kit, Includes HDMI Over Cat5e/6 UTP Transmitter, HDMI Over CAT5e/6 UTP Receiver

Save 5% Every Day†

Key Features

Protect your gear with Adorama Protect.* Learn more

Save 5% Every Day^†