Portable 3.5" drive powered by usb 3.0 only? No power supply

Jtdragon1020

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Oct 2, 2015
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I have read many threads where people say this cant work and they say that it doesnt exist. Well it does, Aluratek AHDUP350F. Please explain this? I havent seen any reviews on it. How can they make this item yet people say it cant work? I understand the 5v vs 12v thing, it just doesnt make sense on how they get it to work.