An unofficial version of the Arduino Nano card with the same features.

USB/Serial converter based on CH340.

Features and characteristics

    Microcontroller: ATmega328
    Rated operating voltage: 5V
    Supply voltage: 7-12V
    Digital inputs/outputs: 14 (6 of which can be used as PWM outputs)
    Analog inputs: 6
    DC Current per I/O Pin : 40 mA
    DC Current for 3.3V Pin : 50 mA
    Flash memory: 32 KB (ATmega328) including 0.5 KB used by the bootloader
    SRAM: 2 KB (ATmega328)
    EEPROM: 1 KB (ATmega328)
    Clock frequency: 16 MHz