StarTech ST121HD20V HDMI over Cat6 Extender 4K 60Hz

StarTech ST121HD20V HDMI over Cat6 Extender 4K 60Hz

Overview

The StarTech ST121HD20V is a high-performance HDMI over Cat6 extender kit designed to transmit 4K 60Hz video and 7.1 channel audio to a remote display up to 165 feet (50 meters) away. This hardware solution is engineered for environments where high-resolution video must be extended beyond the reach of standard HDMI cables, such as boardrooms, digital signage displays, and high-end home theaters. By utilizing standard Cat6 Ethernet cabling, this system provides a reliable, cost-effective method for long-distance signal distribution without compromising image quality.

This extender kit fully supports HDMI 2.0 specifications, including 4:4:4 chroma subsampling, which ensures that every pixel is rendered with absolute color accuracy—a critical requirement for detailed presentations and creative work. The ST121HD20V is HDR (High Dynamic Range) compatible, offering increased brightness and contrast for life-like visuals. Furthermore, the system supports Power over Cable (PoC), meaning only the transmitter requires a power adapter; the receiver draws its power through the Ethernet cable, simplifying installation in remote locations where power outlets may be scarce.

Built for seamless integration, the ST121HD20V features built-in EDID emulation to ensure the source and display communicate correctly for optimal resolution and timing. The transmitter also includes a local HDMI-out port, allowing an additional display to be connected at the source for monitoring purposes. Housed in a durable metal enclosure, the units are designed to withstand professional use and provide superior heat dissipation.

Key Features

• Extends 4K 60Hz HDMI video up to 165ft (50m) over a single Cat6 cable

• Supports HDR and 4:4:4 chroma subsampling for high-fidelity color reproduction

• Power over Cable (PoC) allows the receiver to operate without an external power supply

• Local HDMI output on the transmitter for "split" monitoring at the source

• HDCP 2.2 compliant to ensure compatibility with protected 4K content

Specifications