Another economical clone of the famous Nano! The only difference is that the USB-Serial chip is the CH340G instead of the CP2102 or the FT232RL. In Linux and most MACs the driver is already installed.  For Windows see the Driver below.

Mini USB cable INCLUDED!!

CH340G Replace FT232RL
Operating Voltage(logic level):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
Atmel Atmega328P-AU MCU
Support for external 5V ~ 12V DC power supply or battery
CH340G Driver Download link : Driver for Windows 7
IDE of arduino Download link : http://arduino.cc/en/Main/Software 

Note: To reprogram the bootloader with SPI, this board needs a programmer capable of operating at a 115200 baud rate.

Link to additional drivers in case the above instructions don't work.