Serial Printer (25-25) Cable Pinout - AllPinouts
From AllPinouts
serial interface cable Use this cable between two a computer (DTE) and a printer (DTE) devices.

25 pin D-SUB female connector to the computer

25 pin D-SUB female connector to the printer
| D-Sub 1 | D-Sub 2 | ||
|---|---|---|---|
| Receive Data | 2 | 3 | Transmit Data |
| Transmit Data | 3 | 2 | Receive Data |
| Clear To Send + Data Set Ready | 5 + 6 | 20 | Data Terminal Ready |
| Carrier Detect + Data Terminal Ready | 8 + 20 | ||
| Ground | 7 | 7 | Ground |