Abbreviation of light emitting diode, an electronic device that lights up when electricity is passed through it. LEDs are usually red. They are good for displaying images because they can be relatively small, and they do not burn out. However, they require more power than LCDs.
PC system case reference guide A complete look at the PC system case, including its major components, different sizes and styles, form factors, switches, LEDs and drive bays.
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