http://tinyurl.com/nbshb3p

Generic UK/EU/AU/NZ to US USA-Style Travel Adapter Adaptor AC Power Plug Converter (Pack of 5)

Convert UK/EU/AU plug to US plug

The grounded universal to US adapter plug will convert the shape of any of the major plug types to the US plug shape (Except South Africa and Swiss plug)

Small and light weight design

Perfect to use in travel, work or home

It can almost convert all countries' AC plug to US style.