StarTech.com HDMI over CAT5e HDBaseT Extender – Power over Cable – Ultra HD 4K


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The StarTech.com HDBaseT extender kit, extends HDMI up to 230 feet (70 Meters) over a single CAT5e or CAT6 cable. The extender supports Ultra HD and Full HD resolutions (4K / 1080p) with support for 3D and the accompanying digital audio. For added versatility, both the transmitter and receiver can be powered by the same single power source using Power Over Cable (POC). The versatility of this video extender makes it an ideal solution for digital signage applications in large buildings such as commercial shopping centers, stadiums, schools, and hospitals.

What is HDBaseT?

HDBaseT is a standardized, zero latency, video distribution technology that’s revolutionizing HDMI distribution. HDBaseT uses an advanced method of modulation that enables you to distribute uncompressed HDMI audio and video along with additional signals such as 100BaseT Ethernet, IR, RS-232 serial and power over cable.

Extend more with HDBaseT

The extender offers HDBaseT technology with HDMI and Power in a single extender kit, for complete end-to-end solution. Offering greater versatility than traditional HDMI extenders or HDMI cabling alone HDBaseT is the clear choice for every integrator and system designer. The added benefit of power over cable means you’ll only need one power source at either side of your extension, great for extending video to areas where power outlets may be limited, such as industrial sites.

Astonishing 4K picture quality from an impressive distance

With the A/V industry quickly adopting 4K as the new high-resolution video standard, long range video distribution can be a challenge with standard HDMI cables beginning signal degradation at 30 feet. With support for 4K you’ll be amazed at how HDBaseT maintains your Ultra HD picture quality, four times the resolution of high-definition 1080p, even at 130 feet away from your video source. Plus, because the extender supports High-Definition 1080p and lower resolutions at 230 feet away, you can comfortably use this extender to make any video source look great.

Simplify your setup

This extender has been specially crafted for a smooth, tidy installation. HDBaseT technology allows for single cable installation, for seamless integration using existing CAT5e or CAT6 infrastructure, avoiding the hassle of running multiple Ethernet cables while, reducing potential failure points. Plus, the added benefit of power over cable means you’ll only need one power source to power both your extender and receiver, great for extending to areas where power outlets may be limited. Mounting hardware is also included for both the extender and receiver for discrete, professional mounting.

The ST121HDBTE is TAA compliant and backed by a 2-year StarTech.com warranty with free lifetime technical support.

More from the Manufacturer

  • Dolby? TrueHD, DTS-HD MA Audio
  • Mounting Hardware Included
  • No software/drivers required
  • 70m (230ft) maximum Cat5 cable distance
  • Hassle-free, professional installation with included mounting brackets, and full video extension over one CAT5 cable
  • Also supports HD video resolutions such as 1920×1200 or 1080p at distances up to 230 ft. (70m)
  • Maintains astonishing picture quality up to 115 ft. (35 m) away, with support for UltraHD 4K over non-proprietary CAT5e or CAT6 cabling
  • Extend video where power outlets are limited with power over cable that powers both the transmitter and receiver using a single power source at either side of the connection

Additional information

Number of HDMI Outputs


Maximum Operating Distance

229.66 ft (70000 mm)

Transmitter Depth

3.10" (78.74 mm)

TAA Compliant


Package Contents

1 x HDMI over CAT5e/6 Transmitter unit 1 x HDMI over CAT5e/6 Receiver unit 1 x Mounting Bracket Kit 1 x Universal Power Adapter (NA/EU/UK/AU) 1 x Cat5e Cable 2 x Grounding Wires 1 x Instruction Manual

Receiver Width

2.60" (66.04 mm)



Twisted Pair Cable Standard

Category 6



Environmentally Friendly


Receiver Height

1" (25.40 mm)



Product Color


Receiver Depth

3.10" (78.74 mm)

Limited Warranty

2 Year

Network (RJ-45)


Number of HDMI Inputs


Product Type

Video Extender Transmitter/Receiver

Transmitter Height

1" (25.40 mm)

Environmental Certification


Maximum Video Resolution

4096 x 2160

Graphics Modes


Transmitter Width

2.60" (66.04 mm)

Media Type Supported

Twisted Pair

Country of Origin


Connectivity Technology


Packaged Quantity Condition






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