| right side Pin | Pin Name |
Description |
| 2 | DCD | Data Carrier Detect |
| 4 | RxD | Received Data (by DTE) |
| 6 | TxD | Transmitted Data (by DTE) |
| 8 | DTR | Data Terminal Ready |
| 10 | GND | Signal Ground |
| 1 | DSR | Data Set Ready |
| 3 | RTS | Request To Send |
| 5 | CTS | Clear To Send |
| 7 | RI | Ring Indicator |
| 9 | prot.GND | Not on the DB-9. Protective ground: Shield of plugs and cable are connected here |