ITEM NAME:Pro Mini ATMEGA328P 5V 16Mhz Replace ATmega328 Description&Preview.1 to the TTL level a serial port to send and receive port RX/TX. 14 digital input/output port RX and TX, D2 ~ D13. 8 analog input port A0 ~ A7. 4.6 a PWM port, D3, D5, D6, D9, D10, D11. All pictures are for illustration purpose only and Colours may vary slightly.