Rare 29-pin dual-link HDMI connector providing double the bandwidth of Type A. Never widely adopted; intended for extremely high resolutions. Defined in HDMI 1.0 but not commercially used.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | TMDS Data2+ | TMDS data 2 positive | BUS |
| 2 | TMDS Data2 Shield | Shield | GND |
| 3 | TMDS Data2- | TMDS data 2 negative | BUS |
| 4 | TMDS Data4+ | TMDS data 4 positive (second link) | BUS |
| 5 | TMDS Data4 Shield | Shield | GND |
| 6 | TMDS Data4- | TMDS data 4 negative (second link) | BUS |
| 7 | TMDS Data1+ | TMDS data 1 positive | BUS |
| 8 | TMDS Data1 Shield | Shield | GND |
| 9 | TMDS Data1- | TMDS data 1 negative | BUS |
| 10 | TMDS Data3+ | TMDS data 3 positive (second link) | BUS |
| 11 | TMDS Data3 Shield | Shield | GND |
| 12 | TMDS Data3- | TMDS data 3 negative (second link) | BUS |
| 13 | TMDS Data0+ | TMDS data 0 positive | BUS |
| 14 | TMDS Data0 Shield | Shield | GND |
| 15 | TMDS Data0- | TMDS data 0 negative | BUS |
| 16 | TMDS Data5+ | TMDS data 5 positive (second link) | BUS |
| 17 | TMDS Data5 Shield | Shield | GND |
| 18 | TMDS Data5- | TMDS data 5 negative (second link) | BUS |
| 19 | TMDS Clock Shield | Clock pair shield | GND |
| 20 | TMDS Clock+ | TMDS clock positive | BUS |
| 21 | TMDS Clock- | TMDS clock negative | BUS |
| 22 | CEC | Consumer Electronics Control | BUS |
| 23 | Reserved | Reserved | I/O |
| 24 | SCL | DDC clock | BUS |
| 25 | SDA | DDC data | BUS |
| 26 | DDC/CEC GND | Ground for DDC and CEC | GND |
| 27 | +5V | 5V power | PWR |
| 28 | Reserved | Reserved | I/O |
| 29 | Hot Plug Detect | Hot plug detect | I/O |
Rare 29-pin dual-link HDMI connector providing double the bandwidth of Type A. Never widely adopted; intended for extremely high resolutions. Defined in HDMI 1.0 but not commercially used.