Plugable HDMI 2.1 USB-C to HDMI Adapter (USBC-HDMI8K)

Name: Plugable HDMI 2.1 USB-C to HDMI Adapter (USBC-HDMI8K)
Brand: Plugable

Here is a closer look at Plugable HDMI 2.1 USB-C to HDMI Adapter (USBC-HDMI8K).

About

Plugable explicitly documents that hitting its top ratings — 4K@144Hz or 8K@60Hz — depends on the host system's ability to run Display Stream Compression; without host-side DSC, expect a lower negotiated mode. Supports Dolby Vision and HDR10+ metadata pass-through plus VRR.

HDMI version: 2.1
DP Alt Mode: Yes
Max resolution: 7680x4320@60Hz
Requires DisplayLink driver: No

Ports: 1× HDMI

Confirmed with

Notebook (generic)
Plugable's own testing confirms 4K 120Hz operation on MacBook (M3/M4) under macOS 26 (Tahoe). On older/unsupported OS versions, the adapter's Synaptics silicon fails to negotiate HDMI 2.1 FRL and falls back to legacy TMDS at 4K@60Hz.