In this mode, the USB interface of ATxmega256A3BU MCU acts as a bridge between the PC (i.e. USB Host) and the sensor node. The USB interface accepts the data coming from the Microchip LoRa Development Utility (GUI) and converts it to UART commands through the USB-UART bridge, which is then transmitted to the RN2483 LoRa transceiver module over the UART interface.