We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular desktop KVM switch with multiple HDMI and USB ports on the rear panel

ATEN

ATEN CM1284 4-Port HDMI KVM Switch 4096 x 2160

SKU CH-VQSJ-DE66W MPN CM1284

A 4-port HDMI KVM switch with USB support and dual-console outputs showing quad, picture-in-picture and full-screen modes at 4096 x 2160 resolution

  • Computer ports4 Ports
  • Supported video resolution4096 × 2160
  • USB supportWith USB support
  • Product typeKVM Switchbox
  • Key featuresNumber of Local Users Supported:2 Form Factor:Desktop Rack-m
  • Product dimensionsHeight:1.7 in × Width:17.2 in × Depth:6.5 in
  • Control four computers from one console
  • View all four sources simultaneously in Quad, PiP, PbP or PoP layouts
  • Switch instantly by moving the mouse cursor across screen boundaries
  • Cascade up to two levels for 16 total video sources
  • Dual console outputs give independent multi-view and full-screen displays

Four-port HDMI KVM with multi-view

The ATEN CM1284 is a desktop KVM switch that connects four computers to a single console with dual HDMI outputs. It supports video resolutions up to 4096 x 2160 at 30 Hz and provides eight USB ports for keyboard, mouse and peripheral sharing. Two local users can operate the switch simultaneously for collaborative monitoring.

Installation uses standard HDMI and USB cables

Each computer connects through one HDMI and two USB cables supplied in the package. The switch also includes two RJ-45 ports for daisy-chaining up to three additional CM1284 units, expanding control to sixteen sources. Binding the mouse across windows enables instant source switching without hotkeys or front-panel buttons.

Handles four 4K sources

One console output renders Quad View, Picture in Picture, Picture by Picture or Picture on Picture layouts while the second output shows a single source full-screen. The 30 Hz refresh ceiling limits fluidity for high-frame-rate content. Daisy-chaining adds latency and cable length that may affect signal integrity beyond the second level.

How it compares

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

Price $1,566.99
Pricier than about 92% of the 4,010 comparable items (median $105.49).

Specifications

Product
Brand nameATEN
Model nameCM1284
Product typeKVM Switchbox
Display
Supported video resolution4096 × 2160
Ports & slots
Computer ports4 Ports
USB supportWith USB support
Size & build
Product dimensionsHeight:1.7 in × Width:17.2 in × Depth:6.5 in
Product weight5.42 lb (2.46 kg)
Shipping weight4.99 kg
Package size635 × 356 × 178 mm

Questions about this item

How can I confirm the CM1284 is switching sources correctly after connecting four computers and two displays?

Move the mouse cursor across the screen boundaries; Boundless Switching will instantly change the active computer. Verify both console outputs show the expected modes — one in Quad View, PiP, PbP or PoP and the other in Full Screen — at up to 4096 x 2160 resolution.

Which cables and accessories are included with the CM1284 and what must I purchase separately?

The box contains the CM1284 switch and four USB HDMI cable sets for the computer connections. You will need to supply two HDMI cables for the console monitors, a USB keyboard, a USB mouse and any additional USB peripherals you want to share across the eight USB ports.

Should I choose a single CM1284 or cascade multiple units to reach 16 video sources?

One CM1284 handles four computer connections. Daisy Chain Control lets you link up to three extra CM1284 units from one console, and cascading two levels supports a total of 16 sources. Select the single unit for four sources; add more units only if you need eight, twelve or sixteen simultaneous inputs.

More in KVM Switches & Rack Consoles

Similar items