ITEM NAME:Pro Micro Controller Board ATmega328P 16MHz Arduino Pro Mini Module Tool Product Description Pro Micro Controller Board ATmega328P 16MHz Arduino Pro Mini Module Tool.1 pair the TTL level a serial port to send and receive port RX/TX. 8 analog input port A0-A7. 14 digital input/output port RX and TX, D2-D13. 6 PWM port, D3, D5, D6, D9, D10, D11. Your kind understanding and patience will be highly appreciated.