A typical USB port.

The Universal Serial Bus (USB) is an interface that allows users to hook up vaious tools and accessorys.

Commonly used to hook up most types of periprials to computers, such as printers, mice, keyboards, MP3 players, etc. Each plug has four wires, two power and two data. Most modern computers have at least 2, many have 4, also most modern motherboards have them built in and run them through the Northbridge interface.

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