4k KVM Over Ethernet HDMI USB Extender - Long-Distance 4K KVM

Our review of this 4K KVM over Ethernet unit finds it best suited to IT and AV pros who need reliable remote access to a single workstation or rack while preserving full peripheral control. The main reason to buy is clear: it delivers uncompressed 4K@30Hz video and responsive KVM control up to 120m (394ft) over Cat5e/6/7 with effectively zero latency, which makes it a practical choice for server rooms, control centers, and security monitoring where delay cannot be tolerated.

Key Features

• Long-distance 4K video: Extends uncompressed 4K@30Hz HDMI over Cat5e/6/7 up to 120m, letting central equipment remain far from operator stations without image degradation.
• Zero latency KVM switching: Ethernet-based KVM switching with IR remote control provides immediate switching and stable EDID pass-through for reliable display behavior in multi-screen setups.
• Multiple USB ports: Four USB 2.0 ports carry keyboards, mice and other HID devices over IP so users retain full peripheral control at the remote endpoint.
• Bidirectional RS232: Dual RS232 channels allow serial device management for industrial or automation equipment, eliminating the need for separate cabling.
• Two-way audio: Bidirectional audio and microphone extension supports VoIP and monitoring applications where sound must be routed to and from the remote site.
• Durable metal design: Metal housing improves heat dissipation for continuous operation in AV racks and data center environments.

Who It's For

This unit is aimed at system administrators, AV integrators and security teams who need low-latency remote control of a host system while maintaining 4K video quality and multiple USB peripherals. It is also useful where serial control is required alongside HDMI and audio, such as industrial automation panels and broadcast control rooms.

Those who need wireless operation should look elsewhere: some users report inconsistent behavior when attempting to use the extender over WLAN. It is intended for wired Cat5e/6/7 networks and performs best when connected directly over structured cabling rather than through unpredictable wireless hops.

Pros & Cons

Pros

• Uncompressed 4K@30Hz video with near-zero latency preserves visual fidelity for monitoring and server access.
• Four USB 2.0 ports provide full peripheral support without additional hubs or adapters.
• RS232 and bidirectional audio add practical control and communication channels for professional setups.
• Sturdy metal housing is suited to continuous operation in AV and data center environments.

Cons

• Mixed reports on performance over WLAN - designed for wired Ethernet and best used over Cat5e/6/7 cabling.
• USB 2.0 limits bandwidth for high-speed USB devices compared with USB 3.0 alternatives.

Specifications

Our Verdict

This 4K KVM over Ethernet extender is a solid value for professionals who need reliable, zero-latency remote access with full peripheral and serial control. It excels in wired environments such as server rooms, control centers and AV racks, delivering uncompressed 4K video and practical connectivity without software setup.

Frequently Asked Questions

Can this be used over Wi-Fi?
Answer. It is designed for wired Cat5e/6/7 links; users have reported inconsistent results over WLAN, so wired connections are recommended.

Does it support keyboard and mouse over IP?
Answer. Yes; the unit provides four USB 2.0 ports for keyboards, mice and other HID devices over the Ethernet link.

Is EDID preserved for professional displays?
Answer. Yes; EDID pass-through is supported to maintain stable display behavior in multi-monitor or professional setups.