HDMI KVM Switch 4 PC 2 Monitor Dual Display KVM - 8K/4K Support

In this review the HDMI KVM Switch from ATLAHET is evaluated for users who need to control multiple computers with a single dual-monitor workstation. The bottom line: it is best suited for small offices, studios, or control rooms that require switching between four PCs while sharing two HDMI monitors and USB peripherals, because it supports up to 8K@60Hz or 4K@120Hz, offers EDID emulation to keep displays stable after switching, and includes a powered design so connected USB devices run reliably.

Key Features

• 4 PC 2 Monitor switching: Lets four separate computers share two HDMI monitors and four USB devices, saving desk space and simplifying workflows.
• EDID emulation: Built-in EDID storage preserves monitor parameters so windows and resolutions remain consistent when switching between systems.
• High resolution support: Handles up to 8K@60Hz or 4K@120Hz where cables and displays permit, ensuring smooth, high-resolution video when requirements demand it.
• Extended and duplicate modes: Supports both mirrored and extended desktop setups so users can choose synchronized display or increased desktop area across the two monitors.
• USB 3.0 ports: Four USB 3.0 ports at up to 5Gbps let you share mice, keyboards, webcams and external drives with stable bandwidth when external power is used.
• Two switching methods: Front-panel buttons and an included infrared remote provide simple, immediate switching between host computers.

Who It's For

This KVM is ideal for professionals who work across multiple PCs-designers, developers, lab technicians, or small network operators-who need reliable multi-host control with high-resolution output and shared USB peripherals. The combination of EDID emulation and external power makes it suitable where stable device connections matter.

It is not a good fit for users whose computers or monitors lack the required HDMI ports (each PC must provide two HDMI outputs and each monitor one HDMI input) or for setups relying on docks or adapter chains, since the manufacturer cautions against additional adapters and docking stations.

Pros & Cons

Pros

• Supports high-resolution video up to 8K@60Hz or 4K@120Hz for future-proof multi-monitor setups.
• EDID emulation preserves monitor settings and prevents window reflow on switching.
• Powered USB 3.0 ports deliver stable connections for external drives and peripherals.
• Includes remote control and front-panel buttons for flexible switching.

Cons

• Requires each computer to have two HDMI ports and direct HDMI-HDMI cables, which can limit use with laptops or machines that need adapters.
• Does not support hotkey switching; switching is limited to button or IR remote control.

Specifications

Brand	ATLAHET
Hosts	4 computers
Monitors	2 HDMI outputs (share between hosts)
Max resolution	8K@60Hz or 4K@120Hz (backward compatible)
USB ports	4 x USB 3.0 (up to 5Gbps)
Power	12V 1A external adapter included
Switching	Front panel buttons and IR remote (no hotkeys)

Our Verdict

The ATLAHET 4-port dual-monitor HDMI KVM is a practical choice for professionals needing to manage four PCs from a two-monitor desk with high-resolution output and reliable USB sharing. It offers strong value where direct HDMI connections are available and where EDID stability and powered USB are important, though users with limited HDMI outputs or who expect hotkey switching should look elsewhere.

Frequently Asked Questions

Does this KVM require external power?
Yes. An included 12V 1A adapter is required for stable USB device operation and is recommended for reliable performance.

Can I use one HDMI port per PC?
No. Each computer must provide two HDMI outputs to feed both monitors, and each monitor requires a single HDMI input as specified.

Are adapter cables supported?
The manufacturer advises against additional docking stations and adapter cables; use direct HDMI-HDMI cables for best compatibility.