These days, many — if not most — of the electronics we charge or plug in use USB. Sure, your lamp and your fridge probably don't have a USB plug, but your phone, tablet, bluetooth speaker, portable battery pack, and maybe even laptop likely do. It's sort of an overkill to use a whole outlet just to plug in a single USB cable, which is why there are now several places where you can buy USB wall outlets that you can install directly on a wall.

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