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Rectangular black KVM switch with front buttons, rear HDMI DisplayPort USB audio ports, wired remote on side

SMA

SMA 3-Monitor 4-Port KVM Switch 8K@60Hz 4K@144Hz 2 HDMI + DP USB 3.0 Audio

SKU CH-174X-B9NW8

Share one keyboard, mouse and three monitors (two HDMI, one DisplayPort) across four computers at up to 8K 60 Hz or 4K 144 Hz with built-in USB 3.0 and audio

  • Computer ports4 Ports
  • Monitor ports3 Ports
  • Supported video resolution8K@60 Hz 4K@144 Hz
  • Switching methodPush Buttons
  • Monitor supportHDMI +1 DisplayPort Triple Monitor
  • Audio supportWith Audio
  • Share one keyboard, mouse and three monitors across four computers
  • Drive three displays at up to 8K 60 Hz or 4K 144 Hz
  • Three USB 3.0 ports plus dedicated audio and microphone output
  • Switch instantly with front buttons or wired remote with LED status
  • Plug-and-play on Windows, Linux, macOS and other major operating systems

Triple-Monitor KVM for Four Computers

This KVM switch lets four desktops or laptops share one keyboard, one mouse and three monitors using two HDMI and one DisplayPort output. It targets multi-system workstations, streaming rigs or lab benches where operators need instant access to several machines from a single console.

Passive Power and Rear-Facing Ports

The unit draws power from the connected computers so no external supply is required for basic operation, though a power adapter is included for demanding USB loads. All video, USB and audio sockets face the rear, keeping cables tidy and the desktop clear. Front-panel push buttons and a wired remote provide two hardware switching methods with LED status indication.

Verify Graphics Outputs and Cable Standards

Each source computer must provide two HDMI and one DisplayPort video output to fill the three monitor inputs. To reach 8K at 60 Hz or 4K at 144 Hz the graphics card, monitor and cable must all support HDMI 2.1 or DisplayPort 1.4 respectively. Systems with fewer video outputs or older cable standards will be limited to lower resolutions.

How it compares

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

Price $134.99
Pricier than about 63% of the 4,010 comparable items (median $105.49).

Specifications

Product
Product type2 HDMI + Displayport
Display
Supported video resolution8K@60 Hz 4K@144 Hz
Graphics
Monitor supportHDMI +1 DisplayPort Triple Monitor
Ports & slots
Computer ports4 Ports
Monitor ports3 Ports
USB supportWith USB support
Power
Power requirementsRequires no additional power supply
Size & build
Product dimensions23.3 × 17 × 5.7 cm
Product weight990 g
In the box
In the box1x 4 Port USB 3.0 Triple Monitor KVM Switch, 4x USB 3.0 Cables, 1x Power Adapter, 1x Wired Button Switch, 1x User's manual
More details
Switching methodPush Buttons
Status lightsYes

Questions about this item

What video standard do the HDMI 2.1 and DisplayPort 1.4 interfaces cap at in practice?

The HDMI 2.1 ports support up to 8K at 60 Hz and 4K at 60 Hz, while the DisplayPort 1.4 port supports up to 8K at 30 Hz and 4K at 144 Hz.

What physical space and cables are needed to mount this 23.3 × 17 × 5.7 cm unit and connect four computers?

The switch measures 23.3 by 17 by 5.7 cm and weighs 990 grams; each computer requires one USB 3.0 cable plus two HDMI cables and one DisplayPort cable for video.

How is the KVM installed, and which step do users often miss?

Connect the power adapter, plug the four USB 3.0 cables and all video cables into the rear ports, attach the wired remote button, then select the active PC with the front button or remote.

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