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Black rectangular KVM switch with front buttons and rear HDMI, USB, audio ports

WRIARICH

WRIARICH 402B 4-Port Dual HDMI KVM Switch 4K 60Hz USB 3.0

SKU CH-XEHY-SQ0BG

Control four computers with one keyboard, mouse and dual 4K 60 Hz monitors via HDMI, USB 3.0 and audio switching

  • PC connectionsHDMI, USB 3.0, 3.5 mm Audio
  • Computer ports4 Port HDMI - Dual Monitor
  • Monitor ports2 Ports HDMI
  • Supported video resolutionSupports high resolution up to 3840 × 2160@60 Hz and downwar
  • Switching methodPush Buttons and Desktop Controller
  • Monitor supportHDMI, HDMI
  • Control four computers with one keyboard and mouse set
  • Dual 4K 60Hz HDMI output for extended or mirrored displays
  • Three USB 3.0 ports share peripherals across all systems
  • Push-button and wired remote switching for instant source changes
  • EDID emulation keeps display settings stable when switching

Four-computer dual-monitor control

This 402B HDMI KVM switch connects four computers to one keyboard, mouse and two monitors. Each source must provide two HDMI outputs to use both displays. The unit suits multi-system workstations that need simultaneous access to several machines without extra peripherals.

Passive cooling with external 12 V supply

The metal enclosure dissipates heat without fans, so operation stays silent. A bundled DC 12 V adapter powers the switch and the three downstream USB 3.0 ports, keeping connected drives or docks stable during long sessions.

Wired remote and four host cables included

A push-button remote lets you change the active computer from a distance. Four USB 3.0 Type-A to Type-B cables and a user manual complete the kit, so every host can be linked immediately without extra purchases.

How it compares

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

Price $140.99
Pricier than about 65% of the 4,010 comparable items (median $105.49).

Specifications

Product
Model name402B HDMI KVM
Product typeHDMI, USB
Display
Supported video resolutionSupports high resolution up to 3840 × 2160@60 Hz and downwards.
Graphics
Monitor supportHDMI, HDMI
Ports & slots
PC connectionsHDMI, USB 3.0, 3.5 mm Audio
Computer ports4 Port HDMI - Dual Monitor
Monitor ports2 Ports HDMI
USB supportWith USB support
Power
Power requirementsCome with DC12 V Power Adapter
Size & build
Product dimensions23.42 × 17.42 × 5.71 cm
Product weight885 g
In the box
In the box1 x USB 3.0 HDMI dual monitor KVM switch, 1 x Power adapter, 1 x Wired Remote Switch, 4 x USB 3.0 Type-A to B cable, and 1 x User Manual
More details
Switching methodPush Buttons and Desktop Controller
Status lightsYes

Questions about this item

How do I connect four computers to the 402B KVM and what is the step people often miss?

Connect each computer to two HDMI ports, one USB 3.0 Type-A to B cable and one 3.5 mm audio cable, then attach the two monitors to the HDMI outputs; the step often missed is providing two HDMI sources per computer for dual-monitor operation.

Which parts of the 402B setup will need replacement over time?

The four USB 3.0 Type-A to B cables, the four HDMI cables per computer, the 3.5 mm audio cables and the DC 12 V power adapter are the items that wear out and may need replacing.

What is the first limit reached when running the 402B continuously at 4K 60 Hz?

The HDMI bandwidth ceiling of 3840×2160 at 60 Hz with YUV 4:4:4, HDCP 1.4 and HDR 2.2 is the first limit encountered under sustained use.

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