ITEM NAME:USB Nano V3.0 ATmega328P CH340G 5V 16M Micro-controller board for arduino gN Product Description CH340G Replace FT232RL Operating Voltageï ¼Ë†logic levelï ¼â€°Ã¯ ¼Å¡5V 8 analog inputs ports:A0 ~ A7 14 Digital input / output ports:TX,RX,D2 ~ D13 6 PWM ports:D3, D5, D6, D9, D10, D11 1 pairs of TTL level serial transceiver ports RX / TX Using Atmel Atmega328P-AU MCU There is bootloader installed in it Support USB download and Power Support for external 5V ~ 12V DC power supply Support power supply by 9V battery Support ISP download CH340G Driver Download link : http://www.wch-ic.com/download/list.asp?id=126 OR http://www.5v.ru/ch340g.htm IDE of arduino Download link : http://arduino.cc/en/Main/Software Package included: 1PCS.CH340G Replace FT232RL. Support USB download and Power. 1 pairs of TTL level serial transceiver ports RX / TX. Support ISP download. 6 PWM ports:D3, D5, D6, D9, D10, D11.