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What is USB?

You'll probably hear the term "usb" often, as well as "peripheral." The acronym usb stands for Universal Serial Bus (which you don't have to remember). A "bus" is the system of wires, ports, and programming that a computer uses to connect peripherals and communicate with them. Until the iMac, Apple used a different sort of bus on Macintoshes, and so this switch to the usb is a big deal; it's the new technology that many (especially older) peripherals can't connect to.

On the side of your computer is a little panel you can open, and inside are the ports (as illustrated below). You'll plug all of your peripherals into this place. The usb ports are the rectangular ones in the middle. Notice you have two of them, and your keyboard is already plugged into one. Your printer, one that either has a usb connector or uses an adapter, will plug into the other port.


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