Pinout – DB-9 connector (seriële poort)
| Pin: | Omschrijving | Afkorting |
|---|---|---|
| 1 | Carrier Detect | DCD |
| 2 | Received Data | RxD |
| 3 | Transmitted Data | TxD |
| 4 | Data Terminal Ready | DTR |
| 5 | Common Ground | GND |
| 6 | Data Set Ready | DSR |
| 7 | Request To Send | RTS |
| 8 | Clear To Send | CTS |
| 9 | Ring Indicator | RI |
| - | Protective Ground | - |