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Title: Worked for my UK External Hard Drive
Review: I recently was shipped an external hard drive from the UK. But the power adapter did not include US-style plugs (type A). And I live in the US. This handy travel plug adapter plugs into any of 4 different plug styles, and most important for me, it accepts all of them as well! So I can plug this into US-style plugs and plug UK appliances into it and vice-versa. The travel plug adapter does not alter the properties of the power signal, so I expect the appliance's adapter has to be nimble enough to accept either 110 or 220, but in this case my external hard drive did just fine.
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