...
Connector | Pin No. | Name | Description |
 | 1 | RDB | Receive Data B |
2 | RDA | Receive Data A | |
3 | GND | Ground | |
4 | SDB | Send Data B | |
5 | SDA | Send Data A |
...
Connector | Pin No. | Name | Description |
 | 1 | - | - |
2 | RD | Receive Data | |
3 | TD | Transmit Data | |
4 | - | - | |
5 | SG | Signal Ground | |
6 | - | - | |
7 | RTS | Request To Send | |
8 | CTS | Clear To Send | |
9 | - | - |
...