 14 pin HP Jornada special connector at the PDA | | Pin | Signal | Description |
| 1 | 5V+ USB | |
| 2 | USB Data+ | |
| 3 | USB Data- | |
| 4 | GND | Ground |
| 5 | RTS | RS-232 Request To Send |
| 6 | CTS | RS-232 Clear To Send |
| 8 | DCD,DSR together? | |
| 9 | RXD | RS-232 Receive Data |
| 10 | TXD | RS-232 Transmit Data |
| 11 | DTR | RS-232 Data Terminal Ready |
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