PC power supplies support 1l0V input, nov input or both. Dual-voltage supplies normally have a selector in the back that controls which voltage you are using; obviously, you want to make sure it is set correctly. There are also some supplies that will automatically support either 110V or nov without a selector switch, but these are often found only on more expen,sive units. Power supplies that support dual volt,!ge input are preferable since they are more flexible, although few people transport their PCs overseas (other than laptops, for which this discussion isn't relevant).

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