SparkFun MicroMod Main Board – Double is a specialized carrier board that allows the user to interface MicroMod Processor Board with up to two MicroMod Function Boards. This board includes one USB-C connector for power and programming the Processor Board and M.2 MicroMod connector for easily connecting Processor and Function Boards. The MicroMod Main Board also includes a 2-pin JST connector and a single cell LiPo MCP73831 charge IC (set to a rate of 500mA). Additionally, this board features three status LEDs for power and charging, a microSD card socket for data logging, and two Qwiic connectors for easily adding Qwiic enabled I²C devices.