USB-C HDMI Alt Mode carries HDMI 2.0/2.1 signals over USB-C using an active adapter chip to convert lane signals to HDMI TMDS or FRL format.
| Pin | Name | Function | Type |
|---|---|---|---|
| A2 | TX1+ | HDMI TMDS lane 0+ | BUS |
| A3 | TX1- | HDMI TMDS lane 0- | BUS |
| A10 | RX2- | HDMI TMDS lane 1- | BUS |
| A11 | RX2+ | HDMI TMDS lane 1+ | BUS |
| B2 | TX2+ | HDMI TMDS lane 2+ | BUS |
| B3 | TX2- | HDMI TMDS lane 2- | BUS |
| B10 | RX1- | HDMI TMDS clock- | BUS |
| B11 | RX1+ | HDMI TMDS clock+ | BUS |
| A8 | SBU1 | HDMI CEC | BUS |
| B8 | SBU2 | HDMI HPD | I/O |
USB-C HDMI Alt Mode carries HDMI 2.0/2.1 signals over USB-C using an active adapter chip to convert lane signals to HDMI TMDS or FRL format.