If you often travel in other contries? This all-in-one unit provides plug adapters for use in more than 150 countries. The Kensington Travel Plug Adapter($20) is easy to use, just simply slide out one of the built-in plugs and plug in laptop, cellphone.. It features has safety release button and built-in fuse ensure safe operation, and suit for most electronics(2.5A; 110V - max 275W; 220V - max 550W). It also available in Amazon.