Its a compact version of Arduino Mega 2560, Same features, pin-out, as in Arduino Mega 2560, just compact design to fit into any socket on PCB. Like Arduino Uno has Arduino Nano, similarly Arduino Mega has Arduino Mega mini Pro. Application: IoT ( Due to High Memory), Embedded, Product prototyping. The board has a compact form factor of 38X55mm and is an excellent solution for developing projects based on ATmega2560. The board has a Micro USB connector that allows you to connect the microcontroller to the computer via the USB-UART adapter CH340(A driver installation may be required). Download drivers: Windows, Linux, Mac, Android.