The tables below provide serial port pinout information.
Cisco-like Pinout
Pin | Signal name | Input/output |
1 | CTS | IN |
2 | DCD | IN |
3 | RxD | IN |
4 | GND | N/A |
5 | GND | N/A |
6 | TxD | OUT |
7 | DTR | OUT |
8 | RTS | OUT |
Legacy Pinout
Pin | Signal name | Input/output |
1 | RTS | OUT |
2 | DTR | OUT |
3 | TxD | OUT |
4 | GND | N/A |
5 | CTS | IN |
6 | RxD | IN |
7 | DCD | IN |
8 | Unused | N/A |