CAN WE USE AN EXTERNAL HDD WITHOUT AC ADAPTOR

narendranr1980

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May 6, 2011
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18,510
HellO,
I recently purchased a WD 1TB Element External HDD through Times Shopping for Rs.3,600. I want to know whether it needs any power supply for working or else it can be directly connected through USB for both power and data transmission.In the advertisement they have indicated that it comes with an AC adaptor wheras when i searched for the same product in their website it says no need of ac adaptor.I am totally confuse and want to know how it works????
 

narendranr1980

Distinguished
May 6, 2011
3
0
18,510
 
Like I said, that particular model requires the adpater to use at all times regardless of which computer you use it on.

You didn't list the model without an adapter, but my guess is it's a 2.5" drive instead of a 3.5" drive. 2.5" drives require less power so some can be powered via USB. 3.5" drives usually require more power than a USB port can provide, thus it needs an adapter.
 

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