| Pin | Signal | Description |
| 1 | Tx | |
| 2 | Rx | |
| 4 | USB Data+ | ? |
| 5 | Vpp | |
| 6 | MBUS | |
| 7 | GND | |
| 8 | USB +5V | ? |
| 9 | USB Data- | ? |
| A | Vcc | |
| B | BSI | shorted by 33KOm to pin 12 in Nokia 9500 cable |
| C | GND |

| Pin | Signal | Description |
| 1 | Tx | |
| 2 | Rx | |
| 4 | USB Data+ | ? |
| 5 | Vpp | |
| 6 | MBUS | |
| 7 | GND | |
| 8 | USB +5V | ? |
| 9 | USB Data- | ? |
| A | Vcc | |
| B | BSI | shorted by 33KOm to pin 12 in Nokia 9500 cable |
| C | GND |