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ShopPower CablesStarTech.com HDMI over CAT6 Extender - 4K 60Hz - 330 ft. (100 m)
StarTech.com HDMI over CAT6 Extender - 4K 60Hz - 330 ft. (100 m)
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StarTech.com HDMI over CAT6 Extender - 4K 60Hz - 330 ft. (100 m)

£324.97

£389.96 inc. VAT

Low Stock(11)MPN: ST121HD20L
🚚 Next-day delivery £4.95
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Key Features

StarTech.com HDMI over CAT6 Extender
4K 60Hz
330ft / 100m
IR Support
HDMI Balun
4K Video over CAT6 (ST121HD20L)
Video/audio/infrared extender
HDMI

Product Overview

AI-generated summary

StarTech’s HDMI over CAT6 extender is one of those “simple when it works, painful when you pick the wrong cabling” solutions—and for the money (£324.96 ex-VAT for 100m), it’s only really good value if you’re confident your site cabling is up to scratch. If you’ve already got solid CAT6 installed to that distance (and terminated properly), this kind of setup is brilliant for meeting rooms, training suites, or control rooms where you need a remote screen without running new HDMI runs. The 60Hz/4K class is plenty for business presentations, live demos, and most UI/visual workloads; it’s not just for video walls.

I’d be cautious if you’re expecting it to behave like a “universal” HDMI replacement across random patchwork cabling. At long runs, small differences in cable quality, bend/EMI, and termination can turn “works perfectly” into “intermittent sync or drops” — and then you’re troubleshooting, not presenting. Also, since your category here is oddly filed under power cables, double-check you’re buying exactly the HDMI-over-CAT6 kit you intend (the extender will still need power where applicable, but you shouldn’t be buying this thinking it’s a generic power accessory). Overall: buy it if you have clean CAT6 infrastructure and need reliable long-distance HDMI for a fixed installation; avoid it if you’re unsure about the cabling quality or need high-motion gaming-style reliability.

Specifications

Features

TypeAV transmitter & receiver
Maximum resolution3840 x 2160 pixels
Cable types supportedCat6
Maximum transfer distance140 m
ChipsetNorelsys NS 5730, NS5731

Ports & interfaces

Connectivity technologyWired
RJ-45 input ports1
RJ-45 output ports1
HDMI in1
Number of HDMI outputs1

Power

AC input voltage110 - 240 V
Operating voltage5 V
Output current2 A
External power adapterY
Power plug typeType M

Operational conditions

Operating temperature (T-T)-5 - 40 °C
Storage temperature (T-T)-15 - 55 °C
Operating relative humidity (H-H)0 - 95 %

Weight & dimensions

Width111 mm
Depth76 mm
Height26 mm
Weight271 g

Packaging data

Package width248 mm
Package depth185 mm
Package height95 mm
Package weight1424 g

Packaging content

AC adapter includedY
Cables includedLAN (RJ-45)
Included power plug typesANZ,EU,JP,NA,UK
Quick start guideY
Mounting brackets includedY

Logistics data

Master (outer) case width520 mm
Master (outer) case length420 mm
Master (outer) case height280 mm
Products per master (outer) case10 pc(s)

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