Note: Before running the procedure, pls install the corresponding computer system driver. Features The pins has been welded, you don't need to solder it by yourself. Fully Compatible to Arduino Nano V3.0 ATmega328P-AU ATmega328 Microcontroller Bootloader installed, ready to upload sketches from Arduino software Microcontroller ATmega328P-AU Operating Voltage: 5V Input Voltage: (recommended) 7V-12V Input Voltage: (limits) 6V-20V Digital I/O Pins: 14 (of which 6 provide PWM output) Analog Input Pins: 8 DC Current per I/O Pin: 40 mA DC Current for 3.3V Pin: 50 mA Flash Memory 32 KB (ATmega328) of which 2 KB used by bootloader SRAM: 2 KB EEPROM: 1 KB Clock Speed: 16 MHz Dimention: Approx. 45x17x19mm Cable Length: 245mm Color: Blue(as the picture shows) Package Including 2 * Nano V3.0 ATmega328P Arduino Compatible Board 2 * Mini USB Cable