Solu Leonardo with Headers for Arduino + Free USB Cable / Leonardo Compatible Arduino Revision R3 Atmega32u4 with USB Cable / Perfect Atmega32u4 Ximico Leonardo Compatible Arduino Leonardo ATmega32u4 Microcontroller 20 Digital I/O Pins 7 PWM Channels 12 ADCs We produce this board based on the open-source Arduino official schematics. The printing or color on the board may be different from each production date, but the function is exactly the same.