[ The PC Guide | Systems and Components Reference Guide | Hard Disk Drives | Construction and Operation of the Hard Disk | Hard Disk Connectors and Jumpers ] Power Connector Hard disk drives use a standard, 4-pin male connector plug, that takes one of the power connectors coming from the power supply. This keyed, 4-wire plastic connector provides +5 and +12 voltage to the hard disk. See this discussion of drive power plugs in the power supply reference for more information.
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