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Rectangular black metal box with front push buttons and LED lights, rear HDMI DisplayPort USB ports, wired remote beside it

SMA

SMA 303 KVM Switch 3 Computer 3 Monitor 8K@60Hz/4K@120Hz HDMI+2DP

SKU CH-PRE7-4XKG5

Controls three computers across three monitors at up to 8K 60 Hz with USB 3.0 peripheral sharing and wired remote switching

  • Computer ports3 Ports
  • Monitor ports3 Ports
  • Supported video resolutionThis HDMI Displayport KVM switch 3 port supports Ultra HD re
  • Switching methodPush Buttons and Wired Remote
  • Monitor supportHDMI, HDMI, HDMI
  • Power requirementsCome with DC 12 V Power Adapter
  • Control three PCs with one keyboard and mouse using three independent circuit boards
  • Enjoy 8K resolution at 60 Hz with backward compatibility down to 1080p at 240 Hz
  • Transfer files quickly through four USB 3.0 ports running at 5 Gbps
  • Switch computers instantly via front push buttons or the included wired remote
  • Powered by a supplied 12 V DC adapter for stable multi-monitor operation

Triple-monitor KVM for three computers

The SMA 303 KVM switch lets one keyboard and mouse control three PCs while sharing three HDMI monitors and four USB 3.0 peripherals. It supports both extended and mirrored display modes for flexible multi-screen workflows. The unit ships with a 12 V power adapter, a wired remote, three USB 3.0 cables and a user manual.

Needs dual-DP and HDMI outputs on each PC

Each connected computer must provide two DisplayPort outputs and one HDMI output to drive the three monitor ports. The switch contains three independent circuit boards labelled A, B and C so inputs map directly to matching outputs; signals cannot cross between boards. Front-panel push buttons and the wired remote give instant PC selection without software.

Handles 8K at 60 Hz and high-refresh 4K

Maximum video performance reaches 8K at 60 Hz, with backward compatibility for 4K at 144 Hz, 4K at 120 Hz and 1080p at 240 Hz. USB 3.0 ports deliver up to 5 Gbps for fast peripheral transfers. Builders needing more than three computers or monitors, or systems lacking the required dual-DP plus HDMI graphics layout, will need a different solution.

How it compares

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

Price $126.99
Pricier than about 60% of the 4,010 comparable items (median $105.49).

Specifications

Product
Model name303
Product typeKVM Switch 3 Computer 3 Monitors
Display
Supported video resolutionThis HDMI Displayport KVM switch 3 port supports Ultra HD resolutions up to 8K@60 Hz, with backward compatibility for 4K@144 Hz, 4K@120 Hz, and 1080P@240 Hz--delivering stunning visuals with lifelike imagery and vibrant colors.
Graphics
Monitor supportHDMI, HDMI, HDMI
Ports & slots
Computer ports3 Ports
Monitor ports3 Ports
USB supportWith USB support
Power
Power requirementsCome with DC 12 V Power Adapter
Size & build
Product dimensions8.19 × 8.11 × 2.72 in;
Product weight1.85 lb (0.84 kg)
In the box
In the box1* Triple Monitor KVM Switch, 3* USB 3.0 Cable, 1* Power Adapter, 1* Wired Remote, 1* User's Manual.
More details
Switching methodPush Buttons and Wired Remote
Status lightsYes

Questions about this item

What resolution limit appears first when pushing this 303 KVM switch continuously at 8K 60 Hz?

The 8K 60 Hz ceiling is the first hard limit; higher refresh rates at that resolution are not supported by the switch itself.

How much heat or fan noise does the 303 produce when running three 4K 120 Hz monitors all day?

The unit has no fan and draws power from a 12 V adapter, so it runs silently with only modest warmth during extended use.

Which video ports must each computer already have to drive three HDMI monitors through this switch?

Every source PC needs two DisplayPort outputs and one HDMI output to match the switch’s input layout.

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