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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USB Pinout, Wiring and How It Works

The easiest way to connect computer peripherals is through a Universal Serial Bus (USB). The USB is a plug-and-play interface between the PC and the peripherals. The main advantage of USB is that the ...