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Compact silver aluminium box with front selector button and LED indicators

ESTONE

ESTONE OZK4 8K 60Hz HDMI 2.1 KVM Switch 2 Port USB 3.0

SKU CH-3ZHY-7R413

Controls two computers from one keyboard, mouse and monitor with 8K 60 Hz HDMI 2.1 and four USB 3.0 ports

  • PC connectionsHDMI and USB-C
  • Computer ports2 Ports
  • Monitor ports1 Port
  • Supported video resolution7680 × 4320
  • Switching methodManual Switch
  • Auto-scan interval3 seconds
  • Control two computers with one keyboard, mouse and monitor
  • 8K at 60 Hz and 4K at 120 Hz via HDMI 2.1
  • Four USB 3.0 ports share peripherals and high-current drives
  • Switch by front button or Ctrl+Shift hotkeys
  • Compact aluminium-alloy chassis measuring 111.8 x 63.2 x 24.5 mm

Two-PC HDMI 2.1 KVM Switch

The ESTONE OZK4 is a 2-port HDMI 2.1 KVM switch that lets one keyboard, mouse and monitor control two computers. It supports video up to 7680×4320 at 60 Hz and passes HDCP 2.3. Four USB 3.0 ports and two USB-C inputs provide peripheral sharing for Windows, Mac and Linux systems.

Plug-and-Play With Button or Hotkey

No drivers are required; the unit is recognised immediately on supported operating systems. Switching is done by pressing the front-panel Select button or by using the Ctrl+Shift+1/2 hotkey combination. An auto-scan mode cycles every 3 seconds, and LED indicators show the active port.

Aluminium Shell Handles Continuous 8K 60 Hz

The aluminium alloy enclosure dissipates heat during extended 8K 60 Hz or 4K 120 Hz sessions without throttling. HDCP 2.3 handshake remains stable over long periods, and the integrated chip maintains signal integrity for high-current USB devices such as external drives.

How it compares

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

Price $42.99
Cheaper than about 78% of the 4,010 comparable items (median $105.49).

Specifications

Product
Brand nameESTONE
Product lineOZK4
Model nameOZK4
Product typeHDMI, USB
Display
Supported video resolution7680 × 4320
Ports & slots
PC connectionsHDMI and USB-C
Computer ports2 Ports
Monitor ports1 Port
Size & build
Product dimensions5.43 × 5.35 × 1.46 in
Product weight9.52 oz
More details
Switching methodManual Switch
Auto-scan interval3 seconds
Status lightsYes

Questions about this item

How can I verify the ESTONE OZK4 is switching correctly after connecting both PCs and the monitor?

Press the front "Select" button or use the Ctrl+Shift+1/2 hotkeys; the LED indicators will light for the active port and the monitor should display the chosen computer at up to 7680×4320 resolution.

Which cables and peripherals are included with the OZK4 and what must I provide separately?

The switch itself is supplied; you must supply two HDMI 2.1 cables for the video inputs, one HDMI 2.1 cable for the monitor output, and your own keyboard, mouse or other USB 3.0 devices for the four downstream ports.

The OZK4 lists 8K 60 Hz, 4K 120 Hz and 1080p 240 Hz — which mode should I choose for my setup?

Match the mode to your monitor and GPU: use 7680×4320 at 60 Hz for 8K displays, 3840×2160 at 120 Hz for high-refresh 4K panels, or 1080p at 240 Hz for competitive gaming monitors.

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