Elgato 4K X

Here is a closer look at Elgato 4K X.

About

Elgato's flagship HDMI 2.1 capture card — captures up to 4K@144Hz with HDR10 and VRR passthrough, the current ceiling for external USB capture hardware.

HDMI version
2.1
Max resolution
3840x2160@144Hz
Requires DisplayLink driver
No

Ports: 1× HDMI 2.1 (entrada), 1× HDMI 2.1 (salida, passthrough), 1× USB-C (USB 3.2 Gen2, 10Gbps) and 1× Audio 3.5mm (line-in)

Confirmed with

  • Steam Deck

    Confirmed working by the community when connected via a standard USB-C dock as the video source. Requires a genuine 10Gbps-rated USB-C cable — dropping to a 5Gbps connection removes 10-bit HDR (P010) support at 4K60 and forces more compressed capture formats. If the passthrough signal to the monitor triggers Display Stream Compression, the capture feed can go black, requiring a lower resolution/refresh on the source.

  • PS5
  • Xbox Series X|S
  • Notebook (generic)