All electronics ship with US style plugs.You may need a voltage converter or a plug adapter.
Special Features
USB Host Shield for Arduino UNO MEGA 2560
Support the Google Android ADK
Compatible with Arduino Mega 1280
Compatible with following hardware: Compatible with Arduino Mega 2560 (Recommended); Compatible with Arduino Mega 1280; Compatible with Arduino Uno 328;Compatible with Arduino Diecimila / Duemilanove 328.
The USB power pin have the 3.3Vin and 5Vin pins, which needs to be soldered for the shield to work.