You could download the driver of at: http://.wch-ic.com/download/list.asp?id=126 The Nano is 100% compatible with , using the same chips ATmega328P and CH340 with the official version. It is a smallest, complete, and breadboard friendly board. It has everything that Diecimila/Duemilanove has (electrically) with more analog input pins and onboard +5V AREF jumper. Nano's got the breadboard-ability( Compatible)and the Mini+USB with smaller than either, so users have more breadboard space. It's got a pin layout that works well with the Mini or the Basic Stamp (TX, RX, , GND on one top, power and ground on the other). The Nano can be powered via the Mini-B USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically to the highest voltage source. The Nano Board is a small, complete, and breadboard-friendly board based on the ATmega328P and it works with a . The Nano can be powered via USB connection, 6-12V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The Nano has a of facilities for communicating with a PC or other microcontrollers. Nano Board Nice Boards, Nice Cost Windows driver installation is easy. Power consumption is low. The header pins haven039;t been soldered. Read more Input and Output Each of the 14 digital pins on the Nano can be used as an input or output, using pinMode, digitalWrite, and digitalRead functions. Some pins have functions: Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data. These pins are connected to the corresponding pins of the CH340G USB chip. Read more Classic LED Project with Nano Board This example project shows the simplestthing you can do with an Nano to see physical output: it blinks the on-board LED just like the star in the . size:4.83 x 1.02 x 1.78 cm Material:ABS colour:Blue + Black Package Contents: 3 set x pin header controller modules Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.