Cable Matters USB-C to HDMI 2.1 Adapter (201488)
Here is a closer look at Cable Matters USB-C to HDMI 2.1 Adapter (201488).
About
A VMM7100-based adapter rated for 8K@60Hz and 4K@240Hz. Community reports around VMM7100-family adapters document color-mode fallback to 4:2:2 limited range after a display sleep/wake cycle, requiring a physical HDMI reconnect or toggling display settings to restore full RGB 4:4:4 — later versions of the BetterDisplay macOS utility added a "reinitialize on wake" workaround for this class of adapter.
- HDMI version
- 2.1
- DP Alt Mode
- Yes
- Max resolution
- 7680x4320@60Hz
- Requires DisplayLink driver
- No
Ports: 1× HDMI
Confirmed with
- Notebook (generic)
Official manufacturer FAQ documents a real negative-evidence limitation: laptops with Intel GPUs paired with Acer monitors are capped at 4K@120Hz, while the same monitor reaches 4K@144Hz+ with AMD or Nvidia GPUs — confirming laptop use in general while flagging this specific GPU/monitor combo as degraded.