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Audio line-in device: Connects to the audio-in/line-in jack (light blue
jack) located on the rear panel of your computer

Connecting USB devices

Universal Serial Bus (USB) is a serial bus design capable of cascading peripherals
such as a digital camera, keyboard, mouse, joystick, scanner, printer and
modem. With USB, complex cable connections can be eliminated.
Your computer comes with eight external USB ports: four on the front and four
on the rear panel. These ports support USB 2.0 high-performance external
devices such as webcams and digital still cameras. They also allow you to
connect additional USB devices to your computer without using up its resources.