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Hard Drive Power...Why

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ShaneWard

Post subject: Hard Drive Power...Why

Posted: July 2nd, 2011, 17:17

Joined: July 2nd, 2011, 14:16
Posts: 463
Location: England

Hope this is in the right section.

What I want to know is, why does a 3.5in hard drive (Inside a desktop computer) have a 5v and a 12v rail when it could just use the maximum voltage 12v on a single rail for all its functions. It would prevent accidental over voltage by incorrectly inserting the pins.

Also, why don't 2.5in hard drives have some kind of regulator that can handle 12v if fed it by accident instead of blowing up since the 3.5 hard drive handles this anyway. EG, Its top voltage it can handle is 12v, but uses 5v as normal.

Make any sense...

Shane

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BlackST

Post subject: Re: Hard Drive Power...Why

Posted: July 8th, 2011, 11:04

Joined: July 18th, 2006, 3:05
Posts: 7476
Location: ITALY

For both : because it's more convenient for the manufacturer.

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