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It depends on the form factor of the disk itself. If it's a 2.5" laptop hard disk that runs off of (E)IDE (about 40-44 pins you'll see when disconnected) then usually it will be powered straight from the IDE bus. If it's SATA or (E)IDE on any other form factor (SATA 2.5" laptop/3.5" desktop or IDE 3.5" desktop disks) then they'll need a dedicated 5/12V power supply that usually can be provided by a computer's power supply unit or via a special power brick (if you're using a SATA/IDE to USB interface).

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8y ago
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16y ago

A had drive receives it power from the power supply

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Q: Where does the hard drive receives its power?
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It connects the drive to the system power supply.


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What drive uses a type of memory that requires no power to maintain the data?

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