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Compact black box with front buttons, LED lights, and rear HDMI, DisplayPort, USB ports

SMA

SMA KC-403DH HDMI + 2 DisplayPort KVM Switch 3 Monitors 4 Computers 8K@60Hz 4K@144Hz

SKU CH-ZGCS-WGGWW

Controls four computers across three monitors at up to 8K60 or 4K144 with USB 3.0 peripheral sharing and wired remote switching

  • Computer ports4 Ports
  • Monitor ports3 Ports
  • Supported video resolutionTriple monitor KVM switch 4 port supports up to 8K@60 Hz/4K@
  • Switching methodPush Buttons
  • Monitor supportHDMI, Displayport, Displayport
  • Power requirementsWith DC 12 V Power Adapter
  • Control 4 computers with one keyboard and mouse across 3 monitors
  • Supports up to 8K at 60 Hz via HDMI and 4K at 144 Hz via DisplayPort
  • Four USB 3.0 ports deliver 5 Gb/s data transfer for peripherals
  • Switch systems using front-panel buttons or the included wired remote
  • Compact 3.94 x 2.76 x .79 inch design with 12 V power adapter

Triple-monitor KVM for four computers

This KVM switch lets a single keyboard, mouse and three monitors control up to four computers or laptops. It provides two DisplayPort and one HDMI video output plus four USB 3.0 ports for peripherals. Both extended and mirrored display modes are supported. The unit is driver-free and ready to use out of the box.

Verify graphics outputs and cables first

Each connected computer must supply two DisplayPort and one HDMI video output to drive the three monitors. You will need to provide your own HDMI 2.1 and DisplayPort 1.4 cables; the manufacturer warns that inferior or long cables can cause flicker or instability. A 12 V DC power adapter is included and required for operation.

Compact metal chassis with front switching

The enclosure measures 3.94 x 2.76 x 0.79 inches and fits easily on a desk. Switch between computers using the front push buttons or the included wired remote; LED indicators show the active port. Four USB 3.0 cables are supplied for the computer links, giving up to 5 Gb/s data transfer for attached devices.

How it compares

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

Price $180.99
Pricier than about 76% of the 4,010 comparable items (median $105.49).

Specifications

Product
Model nameKC-403DH Switch
Product typeHDMI +2 Displayport KVM Switch 3 Monitors 4 Computers
Display
Supported video resolutionTriple monitor KVM switch 4 port supports up to 8K@60 Hz/4K@144 Hz, But please note that:?Displayport part supports max resolution up to 8K@30 Hz/4K@144 Hz.?HDMI part supports max 8K@60 Hz/4K@120 Hz.
Graphics
Monitor supportHDMI, Displayport, Displayport
Ports & slots
Computer ports4 Ports
Monitor ports3 Ports
Power
Power requirementsWith DC 12 V Power Adapter
Size & build
Product dimensions3.94 × 2.76 × 0.79 in
In the box
In the box1* Triple Monitor KVM Switch, 4* USB 3.0 Cable, 1* Power Adapter, 1* Wired Remote, 1* User's Manual
More details
Switching methodPush Buttons
Status lightsYes

Questions about this item

What cables come in the box and which ones must I buy separately?

The box includes the KVM switch, four USB 3.0 cables, a 12 V power adapter, a wired remote and a manual. You must supply two DisplayPort 1.4 cables and one HDMI 2.1 cable per computer for video.

My PCs have mixed video outputs; which port combination on this switch matches my hardware?

Each computer needs two DisplayPort 1.4 outputs and one HDMI 2.1 output. The switch provides two DisplayPort and one HDMI monitor outputs, so your graphics cards must match that layout.

Will I actually see 8K at 60 Hz on all three screens at once?

The HDMI monitor port can reach 8K at 60 Hz. Each DisplayPort monitor port tops out at 8K at 30 Hz, though both can run 4K at 144 Hz.

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