CMSTEDCD GMXUS-SW243 Dual-Monitor KVM Switch for 4 Computers

1 / 7

Product guide

CMSTEDCD GMXUS-SW243 Dual-Monitor KVM Switch for 4 Computers

CMSTEDCD GMXUS-SW243 is a dual-monitor KVM switch listing support for sharing two displays and a USB peripheral set across four computers. It claims up to 8K at 60 Hz or 4K at 144 Hz, but each computer needs two HDMI outputs and the high-resolution modes depend on compatible computers, displays, and cables.

At a glance

Switches a shared keyboard, mouse, two monitors, and USB peripherals among four computers, according to the listing.
EDID emulation is claimed to retain monitor resolution and refresh-rate information when switching hosts.
The listing says 8K60Hz and 4K144Hz modes require compatible display equipment, with 8K also requiring HDMI 2.1 cables.
The stated USB data rate is up to 5 Gbit/s, with backward compatibility for USB 2.0 and USB 1.1 devices.

Price

$110.49Save 15%

Reference price: ~~$129.99~~

Price checked: Nov 14, 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

Highwings 8K HDMI 2.1 Cable 2-Pack 6.6FT, Certified 48Gbps Ultra High Speed | Braided Slim HDMI Cord, 8K60Hz 4K@120Hz 8K@60Hz, HDCP 2.2&2.3, eARC,Dynamic HDR,DTS:X Compatible for PS5/Blu-ray/Roku TV/HDTV

$9.99

Pros and cons

Pros

Four-computer, two-monitor sharing can consolidate peripherals and displays on a multi-PC desk.
Four USB 3.0 ports provide connections for shared USB devices.
EDID emulation is intended to preserve display settings during host switching.

Cons

Hotkey switching is explicitly not supported, so switching relies on the listed button or remote controls.

Technical specifications

16 specifications

Identity
Brand	CMSTEDCD
Model	GMXUS-SW243-Deep Blue

Video and USB
Maximum listed video modes	8K60Hz,4K144Hz and below
HDMI version listed	HDMI 2.1 compliant
USB ports	four USB 3.0 ports
Maximum video bandwidth	48 GBPS
Maximum data transfer rate	5 Gbit/s
Display feature	EDID Emulation
USB backward compatibility	USB 2.0 and USB 1.1 devices

Connectivity and controls
Control methods listed	Push Button, Remote
Hotkey switching	hotkey switching are not supported
Compatible devices listed	Computers, Monitors, Keyboards, Mice, Printers, Scanners
Operating systems listed	Windows/Vista/XP and Mac OS, Linux and Unix

Dimensions and installation
Mounting types listed	Panel Mount
Dimensions listed	9.33 x 3.31 x 1.38 inches

Materials and protection
Material listed	Metal

What to know before buying

Listing details to confirm

The computer's host graphics card must have two HDMI outputs, and the computer must support dual- or multi-screen display. The claimed high-resolution modes also require compatible computers, monitors, and cables. The listing gives 8K HDMI 2.1 cable guidance, and says to connect the included 12V 1A external power supply before using USB devices. The title and feature copy describe four computers and two monitors, while unrelated A+ entries describe other port configurations. The title gives 4K144Hz, while feature copy says up to 8K60Hz and 4K144Hz. Control details are inconsistent because the details list a button and remote, while feature copy mentions hotkey switching only to say it is unsupported. Confirm the selected listing's configuration and control method before purchase.

What’s in the box

Included

USB cables

Who is it for?

A good fit for

People who need to switch two monitors and shared USB peripherals between as many as four computers.
Workstations where preserving monitor layout and settings during host switching is useful.
Setups with two HDMI outputs per computer and monitors and cables matched to the desired video mode.

Less suited to

Computers without two HDMI outputs or systems that do not support dual- or multi-screen display.
Buyers who require keyboard hotkeys for switching.

CMSTEDCD GMXUS-SW243 Dual-Monitor KVM Switch for 4 Computers · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 1,172 ratings

5 stars78%78%
4 stars7%7%
3 stars2%2%
2 stars3%3%
1 star10%10%

Customer feedback describes easy, convenient setup, quick switching, appreciated 4K picture quality, and a more organized desk. Some customers also report connectivity or compatibility issues, so buyers should weigh that concern against their particular computer and display setup. The feedback reflects reported experiences and does not establish performance at the listing's maximum video modes.

Positive themes

Customers describe the switch as easy to use and convenient to set up.
Feedback praises switching speed, 4K picture quality, and desk organization.

Mixed feedback

Connectivity feedback is mixed, with some customers reporting compatibility issues.

Frequently asked questions

How many computers and monitors does this KVM switch support?

The title and main feature copy describe four computers sharing two monitors and USB peripherals. The listing also contains A+ entries for other configurations, so confirm the selected variant before ordering.

What is needed to use two monitors with each computer?

The listing says each computer's graphics card needs two HDMI outputs and the computer must support dual- or multi-screen display.

Does it support 8K and 4K at high refresh rates?

The listing claims up to 8K60Hz and 4K144Hz. For 8K, it specifies a compatible computer, monitor, and HDMI 2.1 cables. Actual use also depends on compatible equipment.

Can I switch hosts using keyboard hotkeys?

No. The feature text explicitly says hotkey switching is not supported, although the details list push-button and remote control methods.