The pinout of the 6 pin header according to the datasheet:
| Pin | Name | Type | Color | Description |
|---|---|---|---|---|
| Pin 1 | GND | GND | Black | Device grond |
| Pin 2 | CTS# | I | Brown | Clear To Send |
| Pin 3 | VCC | O | Red | +3.3V output |
| Pin 4 | TXD | O | Orange | Transmit Async Data Output |
| Pin 5 | RXD | I | Yellow | Transmit Async Data Input |
| Pin 6 | RTS# | O | Green | Reqest To Send |