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Black rectangular KVM switch with three HDMI ports and four USB 3.0 ports

SMA

SMA 8K@60Hz HDMI KVM Switch 3 Monitors 2 Computers USB 3.0 4 Ports

SKU CH-1H31-8VVBJ

Lets two computers share three HDMI monitors and four USB 3.0 peripherals at up to 8K 60 Hz or 4K 120 Hz with push-button or wired-remote switching

  • TypeHDMI KVM Switch 3 Monitors 2 Computers
  • PC ConnectorsHDMI 2.1, USB 3.0
  • Computer Connections2 Ports
  • Monitor Connections3 Ports
  • Video ResolutionKVM switch supports resolutions and refresh rates up to 8K@6
  • PC SelectionPush Buttons and Wired Remote
  • Share triple monitors and four USB 3.0 peripherals between two computers
  • Switch up to 8K@60Hz or 4K@120Hz video with HDMI 2.1 bandwidth
  • Four USB 3.0 ports deliver up to 5Gbps data transfer for fast file sharing
  • Choose wired remote or front-panel button for instant PC switching
  • LED indicators show the active computer at a glance

Triple-monitor KVM for two computers

This HDMI 2.1 KVM switch lets two computers share three displays and four USB 3.0 peripherals. It supports extended and duplicate modes so each machine can drive three unique screens or mirror the same image across all monitors. Each connected computer must provide three HDMI outputs to use the triple-monitor capability. Buyers whose laptops only offer one or two video outputs cannot use the full three-screen layout.

Passive cooling with external 12 V supply

The unit runs without internal fans, relying on its metal chassis for heat dissipation during normal operation. A 12 V DC adapter powers the switch and the four downstream USB 3.0 ports, delivering up to 5 Gbps per port for attached drives or accessories. No additional power supply sizing guidance is provided by the manufacturer. Builders who need redundant or rack-mounted power inputs should look elsewhere.

Wired remote and front-panel switching included

The package supplies a wired push-button remote, two USB 3.0 cables, the 12 V adapter and a user manual. The remote duplicates the front-panel switch function so the main box can be tucked out of sight while switching remains accessible. LED indicators show which computer is active. No configuration software or drivers are bundled; the device operates purely through hardware button presses.

Highlights

  • Share triple monitors and four USB 3.0 peripherals between two computers
  • Switch up to 8K@60Hz or 4K@120Hz video with HDMI 2.1 bandwidth
  • Four USB 3.0 ports deliver up to 5Gbps data transfer for fast file sharing
  • Choose wired remote or front-panel button for instant PC switching
  • LED indicators show the active computer at a glance

Specifications

TypeHDMI KVM Switch 3 Monitors 2 Computers
PC ConnectorsHDMI 2.1, USB 3.0
Computer Connections2 Ports
Monitor Connections3 Ports
Video ResolutionKVM switch supports resolutions and refresh rates up to 8K@60Hz 4K@120Hz, and is backward compatible with 1080p 3D 720P, etc.
PC SelectionPush Buttons and Wired Remote
Monitors SupportedHDMI, HDMI, HDMI
LED IndicatorsYes
Power Features12V DC Adapter
USB Featuresequipped with 4 USB 3.0 ports, which offers significantly faster data transfer rates, enabling quick and efficient file sharing and device connectivity between computers and peripherals. USB 3.0 is backward compatible with USB 2.0 devices, ensuring seamless integration and usage of a wide range of peripherals, such as keyboards, mouse, printers, scanners, external storage devices, and more.
ApplicationThe triple KVM switcher allows 2 PC or laptop share triple monitor and 1 set of keyboard mouse printer U disk and other usb peripherals；Support extended & duplicate mode; It offers the convenience of switching between different computers without the need for multiple sets of peripherals & monitors, It's an efficient and cost-effective solution for individuals with 2 computers. Note: Please make sure your computer supports multiple monitors.
Features8K 60Hz HDMI KVM Switch;
High Speed USB KVM Switch;
Two Switching Options
Dimensions5.91 x 2.56 x 1.91 inch
Weight0.65kg
Package Contents1 x Triple Monitor KVM Switch,
2 x USB 3.0 Cable,
1 x Power Adapter,
1 x Wired Remote,
1 x User Manual

Questions about this item

How do I connect the two computers to the three HDMI monitors and four USB 3.0 ports, and which step is often missed?

Each computer needs three HDMI 2.1 outputs and one USB 3.0 cable to the switch; the step often missed is confirming both PCs actually have three HDMI ports before starting.

What maintenance or replacement will the 12V DC power adapter need over time?

The external 12V DC adapter is the only wear item; if the LED indicators stop lighting or switching becomes unreliable, replace the adapter with an equivalent 12V unit.

At what resolution and refresh limit does the HDMI 2.1 link saturate first during sustained 8K@60Hz use?

The HDMI 2.1 interface caps at 8K@60Hz and 4K@120Hz; sustained 8K@60Hz operation hits that bandwidth ceiling before any thermal limit appears.

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