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Small black box with four HDMI ports, three USB ports, wired remote button, four 1.5 m cables attached

WRIARICH

WRIARICH HDMI KVM Switch 4 Port 3x USB 2.0 4K@30Hz 1.5m Cables Desktop Controller

SKU CH-0BMK-HB0DW

Controls four computers with one monitor, keyboard and mouse via HDMI and three USB 2.0 ports at 4K 30 Hz, includes 1.5 m cables and desktop controller

  • Computer ports4 Port HDMI
  • Supported video resolution3840 × 2160
  • Product typeHDMI, USB
  • Control 4 computers with one monitor, keyboard and mouse using the desktop controller or front buttons
  • Share three USB 2.0 peripherals across all connected systems without unplugging cables
  • View content at 3840 x 2160 resolution at 30 Hz for sharp 4K output
  • Works instantly with Windows 10, 11, Linux, Mac OS and consoles — no driver installation needed
  • Includes four 1.5 m HDMI cables with integrated USB connectors and a wired desktop controller

Four-Computer HDMI KVM Switch

This HDMI KVM switch lets you control four computers from a single monitor, keyboard and mouse. It supports video up to 3840 x 2160 at 30 Hz and adds three USB 2.0 ports for shared peripherals such as a printer or flash drive. The package includes a desktop controller for convenient switching.

Plug-and-Play Installation

No driver software is required; simply connect the four supplied 1.5 m HDMI cables with integrated USB pigtails to each computer and the switch is ready to use. A common mistake is inserting the HDMI and USB connectors the wrong way round — follow the cable labelling to avoid a blank screen or unrecognised peripherals.

Check Your Source Ports and Resolution

Verify that each computer provides an HDMI output and a spare USB port for the combined cable. The switch tops out at 30 Hz at 3840 x 2160, so systems set to higher refresh rates at that resolution will need to be lowered. Ensure your monitor accepts the chosen resolution and refresh rate before ordering.

How it compares

Measured against everything we stock in KVM Switches & Rack Consoles, at today’s prices. Recalculated every night.

Price $35.99
Cheaper than about 83% of the 4,010 comparable items (median $105.49).

Specifications

Product
Product typeHDMI, USB
Display
Supported video resolution3840 × 2160
Ports & slots
Computer ports4 Port HDMI

Questions about this item

How can I verify the switch is delivering 4K@30Hz to my monitor after setup?

Check your monitor's on-screen display or graphics control panel to confirm it reports 3840 x 2160 at 30 Hz while the switch is selected.

What cables and accessories are included, and do I need to buy anything else for four computers?

The box contains the 4-port switch, a wired desktop controller, four 1.5 m HDMI cables with integrated USB 2.0 pigtails, and a user manual — no extra cables are required for four computers.

Which version should I choose if I need 4K@30Hz and three USB 2.0 ports for keyboard, mouse and printer?

This single model provides 4K@30Hz video, three USB 2.0 hub ports, and four computer connections, matching those requirements exactly.

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