| Pin | Signal |
| 3 | DSR |
| 4 | Vcc |
| 5 | Vcc |
| 6 | Power ON ? |
| 10 | USB PI - |
| 12 | GND |
| 13 | Rx |
| 14 | Tx |
| 15 | USB PU + |
| 16 | USB 5V + ? |
| 17 | CD ? |
| 18 | RI |
| 19 | GND |
| 20 | RTS |
| 21 | + |
| 22 | + |
| 23 | CTS |
| 24 | DTR |
| Pin | Signal |
| 3 | DSR |
| 4 | Vcc |
| 5 | Vcc |
| 6 | Power ON ? |
| 10 | USB PI - |
| 12 | GND |
| 13 | Rx |
| 14 | Tx |
| 15 | USB PU + |
| 16 | USB 5V + ? |
| 17 | CD ? |
| 18 | RI |
| 19 | GND |
| 20 | RTS |
| 21 | + |
| 22 | + |
| 23 | CTS |
| 24 | DTR |