| Pin | Signal | Description |
| 1 | RTS (+D) | USB |
| 2 | CTS (-D) | USB |
| 3 | Tx | |
| 4 | Rx | |
| 5 | GND | |
| 6 | DCD | |
| 7 | Power | |
| 8 | GND MIC | |
| 9 | MIC | |
| 10 | AudioL | |
| 11 | AudioGND | |
| 12 | AudioR |
| Pin | Signal | Description |
| 1 | RTS (+D) | USB |
| 2 | CTS (-D) | USB |
| 3 | Tx | |
| 4 | Rx | |
| 5 | GND | |
| 6 | DCD | |
| 7 | Power | |
| 8 | GND MIC | |
| 9 | MIC | |
| 10 | AudioL | |
| 11 | AudioGND | |
| 12 | AudioR |