We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Compact black KVM switch box with four 2-in-1 HDMI USB cables and a wired remote button

Corn Electronics

Corn Electronics 4-Port HDMI USB KVM Switch 3840x2160@30Hz USB 2.0 4 Cables

SKU CH-RTSH-SXZ9N

Share one 3840x2160@30Hz monitor and three USB 2.0 peripherals across four computers with panel-button or wired-remote switching

  • TypeUSB
  • Share one 4K monitor across four computers
  • Switch instantly via front button or wired remote
  • 3840×2160 @ 30 Hz output for crisp visuals
  • Three USB 2.0 ports connect keyboard, mouse and printer
  • Four 2-in-1 KVM cables included for quick setup

Four-computer KVM switch

This Corn Electronics KVM switch lets four computers share one HDMI monitor and three USB 2.0 peripherals. It supports a maximum output resolution of 3840x2160 at 30Hz. The unit includes four 2-in-1 KVM cables, a wired remote button, and a front-panel button for switching. No driver installation is required for Windows, Mac OS, Linux, UNIX, or DOS systems.

Replaces cable swapping and multi-monitor setups

The switch eliminates the need to physically move HDMI and USB cables when changing between four connected PCs. It is a practical upgrade when desk space limits the number of displays or when a single keyboard, mouse, and printer must serve multiple machines. The jump is worth it when manual cable changes cause workflow interruptions or port wear.

Stable 30Hz output under continuous switching

Video output holds at 3840x2160 resolution and 30Hz refresh during extended sessions with frequent source changes. USB 2.0 peripheral links remain active without re-enumeration delays when toggling via the panel button or wired remote. The all-metal enclosure aids heat dissipation during all-day operation in office or home environments.

Highlights

  • Share one 4K monitor across four computers
  • Switch instantly via front button or wired remote
  • 3840×2160 @ 30 Hz output for crisp visuals
  • Three USB 2.0 ports connect keyboard, mouse and printer
  • Four 2-in-1 KVM cables included for quick setup

Specifications

TypeUSB

Questions about this item

What ports does the Corn Electronics KVM switch need on each computer to connect the four included 2-in-1 cables?

Each computer must provide one HDMI output and one USB 2.0 port for the combined HOST connector on the supplied cables.

The panel button and wired remote both switch inputs; what common mistake should I avoid when plugging in the cables?

Do not reverse the HOST and KVM ends — the HOST side (HDMI plus USB) goes into the computer, the KVM side (HDMI only) goes into the switch.

The switch supports 3840×2160 at 30 Hz; what component will likely need replacement first if I want higher refresh rates later?

The HDMI 2-in-1 cables and the switch’s internal HDMI pathway limit the signal to 30 Hz, so both would need upgrading for 60 Hz operation.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.