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Power Supply Amperage for External USB Disk Drive

Last response: in Storage
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April 8, 2012 12:02:54 PM

What amperage range is acceptable for an external usb hard drive?

I have three 12 volt power supplies with 1.2amp, 4.0amp and 5.0amp.

Are any of them suitable for an external usb hard disk drive?
a c 144 ) Power supply
a b G Storage
April 8, 2012 12:12:16 PM

The larger WD externals ship with a power adapter that provides 1.5 amp at 12 volts.

The 1.2 amp PS might work.
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