All electronics ship with US style plugs.You may need a voltage converter or a plug adapter.
Special Features
Using Atmel atmega328p-au MCU, support ISP download; support USB Download and Power
Original ATmega328P CH340 chip is used. Improved new version CH340G Replace FT232RL
The Nano can be powered via the Mini-B USB connection, 7-12V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27)
Nano V3.0 card is 100% compatible with the Nano card, and fully compatible with Windows, Mac and Linux operating system
Nano 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