PDA connectors and cables the following pinout is on the Casio A-10/11, A-20/21/22 and the original Compaq C-120 and C-140
| Pin | Description |
|---|---|
| 1 | Not Connected |
| 2 | Not Connected |
| 3 | Data Ground |
| 4 | Not Connected |
| 5 | Not Connected |
| 6 | ADPin |
| 7 | ADPin |
| 8 | DGRN |
| 9 | DockB |
| 10 | Clear to Send |
| 11 | Data Carrier Detect |
| 12 | Receive Data |
| 13 | Send Data |
| 14 | Request to Send |
| 15 | Data Terminal Ready |
| 16 | Data Ground |