As seen from above on motherboard:
| Pin Number |
Pin Name |
Pin Number |
Pin Name |
|---|---|---|---|
| 1 | +12 | 2 | -12 |
| 3 | DCD2 | 4 | DSR2 |
| 5 | RXD2 | 6 | RTS2 |
| 7 | TXD2 | 8 | CTS2 |
| 9 | DTR2 | 10 | RI2 |
| 11 | Gnd | 12 | COMM_B_DETECT |
| 13 | EXT_RI2 | 14 | +5V |
| 15 | NC | 16 | Gnd |
COMM_B_DETECT: Connect to GND to enable COM2 in BIOS


