Universal Serial Bus (or USB) is a versatile interface that's used in all sorts of devices — from smartphones to lifestyle products — to deliver data, power, and video signals. Most commonly, we see ...
How-To Geek on MSN
Blue, black, or red? What your USB port colors actually mean
Without clear labels, you can rely on colors, but remember that those aren't mandated by USB-IF, so they're not a guarantee.
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