RDK S100 MCU port expansion board (including FPC connector cable) is the core expansion module of the D-Robotics RDK S100 series development kit. It is primarily used to expand the MCU interface functionality, integrate an inertial measurement unit (IMU), supports peripheral connections such as Ethernet, CAN_FD, ADC, SPI, IIC, and UART. This facilitates the connection of various peripherals, thereby accelerating the testing and development process.