ATmega328 Microcontroller
Microcontroller ATmega328P-AU
Fully Compatible to Arduino Nano V3.0 ATmega328P-AU
Input Voltage (recommended) 7V-12V;Input Voltage (limits) 6V-20V
Bootloader installed, ready to upload sketches from Arduino software
Analog Input Pins 8
Operating Voltage 5V
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Digital I/O Pins 14 (of which 6 provide PWM output)
Flash Memory 32 KB (ATmega328) of which 2 KB used by bootloader
Note: Before running the procedure, pls install the corresponding computer system driver.

Drivers: directly from the chip manufacturer:

WCH 340 product home page:

http://www.wch.cn/product/CH340.html