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Small silver aluminium box with HDMI and USB-C ports on one side, HDMI output on the other, button and LEDs on top

ESTONE

ESTONE OZK4 HDMI 2.1 KVM switch 8K 60Hz 4K 120Hz HDCP 2.3 2-port

SKU CH-NNYR-F9X1T

Lets you control two computers with one keyboard, mouse and monitor at up to 8K 60 Hz or 4K 120 Hz

  • 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 for peripherals and high-current drives
  • Switch instantly by front button or Ctrl+Shift hotkeys
  • Compact aluminium-alloy chassis measures 111.8 × 63.2 × 24.5 mm

Two-computer HDMI 2.1 KVM

This ESTONE OZK4 KVM switch lets you control two computers with one keyboard, one mouse and a single monitor. It accepts two HDMI 2.1 sources and one USB-C source per computer, then outputs to one HDMI 2.1 display. Four USB 3.0 ports on the front handle peripherals such as printers or storage. A push button and hotkeys (Ctrl+Shift+1/2) change the active host instantly.

Desktop users needing 8K 60 Hz or 4K 120 Hz

The switch suits anyone who shares a high-refresh monitor between a workstation and a laptop, console or second PC. It supports 1080p at 240 Hz, 4K at 60 Hz and 120 Hz, and 8K at 60 Hz with HDCP 2.3. Buyers who must drive more than one monitor simultaneously, or who need automatic timed switching beyond the fixed 3-second scan, should look at a different solution.

Single-monitor 8K 60 Hz HDMI 2.1 output

The decisive specification is the single HDMI 2.1 output limited to 7680×4320 at 60 Hz. If your workflow demands dual-head operation, higher refresh at 8K, or a DisplayPort path, this unit will not meet that requirement.

How it compares

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

Price $41.99
Cheaper than about 79% 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

Should I pick the model with two HDMI 2.1 inputs or the one with USB-C inputs for my dual-PC setup?

This OZK4 unit includes both two HDMI 2.1 inputs and two USB-C inputs, so you can connect each PC via whichever video port it provides without choosing a different version.

What does the 8K 60Hz rating mean when I connect a monitor and two computers?

The switch passes 7680×4320 at 60 Hz from either computer to the single display, and also handles 4K at 120 Hz or 1080p at 240 Hz, automatically adapting to the monitor’s native resolution.

How does the HDMI 2.1 interface with HDCP 2.3 limit what I can actually run?

HDMI 2.1 bandwidth carries 8K 60 Hz and 4K 120 Hz signals, while HDCP 2.3 ensures protected 4K and 8K content plays without handshake errors on either connected PC.

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