Some storage controllers may include SAS interface and NVMe (PCIe) interface by multiplexing the data and sidebands signals. The pinout follows the SFF-9402 specificatons.
The SFF-8643 interface is compliant with the SAS 3.0 specifications, supports 12Gb/s data transfer protocol and up to 4-ports (4 lanes) of SAS data.
| Pin Number |
Pin Name |
Description |
|---|---|---|
| A1 | SB7 | Sideband 7 |
| A2 | SB0 | Sideband 0 |
| A3 | GND | |
| A4 | Rx1+ | |
| A5 | Rx1- | |
| A6 | GND | |
| A7 | Rx3+ | |
| A8 | Rx3- | |
| A9 | GND | |
| B1 | SB3 GND | Sideband 3 ground |
| B2 | SB1 | Sideband 1 |
| B3 | GND | |
| B4 | Rx0+ | |
| B5 | Rx0- | |
| B6 | GND | |
| B7 | Rx2+ | |
| B8 | Rx2- | |
| B9 | GND | |
| C1 | SB4 | Sideband 4 |
| C2 | SB2 | Sideband 2 |
| C3 | GND | |
| C4 | Tx1+ | |
| C5 | Tx1- | |
| C6 | GND | |
| C7 | Tx3+ | |
| C8 | Tx3- | |
| C9 | GND | |
| D1 | SB5 | Sideband 5 |
| D2 | SB6 | Sideband 6 |
| D3 | GND | |
| D4 | Tx0+ | |
| D5 | Tx0- | |
| D6 | GND | |
| D7 | Tx2+ | |
| D8 | Tx2- | |
| D9 | GND |


