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Small silver aluminium box with front buttons and rear ports

ESTONE

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

SKU CH-TDDK-MKJA8

Share one monitor, keyboard and mouse between two computers with 8K 60 Hz or 4K 120 Hz HDMI 2.1 switching 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 using HDMI 2.1 and USB 3.0
  • Display 8K at 60 Hz or 4K at 120 Hz for sharp gaming and creative work
  • Switch instantly by front button or Ctrl+Shift hotkeys without software drivers
  • Four USB 3.0 ports share printers, drives and peripherals across both connected PCs
  • Compact aluminium-alloy chassis measures 111.8 × 63.2 × 24.5 mm for tidy desk setups

Two-computer HDMI 2.1 KVM switch

The ESTONE OZK4 lets a single monitor, keyboard and mouse control two computers through HDMI 2.1 inputs with USB-C and USB 3.0 peripheral ports. It supports 7680×4320 at 60 Hz and 3840×2160 at 120 Hz, plus 1080p at 240 Hz. Compatible with Windows, macOS, Linux and Unix systems.

Sustained 8K 60 Hz and 4K 120 Hz throughput

HDMI 2.1 bandwidth and HDCP 2.3 compliance maintain full resolution and colour depth during long work or gaming sessions without signal drop-out. The integrated digital chipset handles continuous high-current USB 3.0 device traffic alongside video. Front-panel button or Ctrl+Shift hotkeys switch sources in seconds.

Aluminium alloy chassis with dense I/O

The 111.8×63.2×24.5 mm aluminium shell resists corrosion and electromagnetic interference while dissipating heat from the combined video and data streams. Two HDMI 2.1 inputs, two USB-C inputs, four USB 3.0 upstream ports and one HDMI 2.1 output sit on the rear panel. LED indicators show the active port at a glance.

How it compares

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

Price $38.99
Cheaper than about 81% 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

Does the ESTONE OZK4 run hot or draw much power when it stays on 24/7?

The aluminium-alloy shell dissipates heat passively; with no fan or active cooling the unit remains cool during continuous operation.

What cables or ports must my two computers already have to use this KVM?

Each computer needs an HDMI 2.1 output and either a USB-C or USB 3.0 port for keyboard, mouse and peripheral data.

Will my older 1080p 240 Hz monitor work through the OZK4 alongside a newer 8K display?

Yes — the switch supports 1080p at 240 Hz, 4K at 120 Hz and 8K at 60 Hz, so legacy high-refresh panels and modern high-resolution screens both work.

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