Laptop Hard Disk Power Connection

This is a discussion on Laptop Hard Disk Power Connection within the Tech Board forums, part of the Community Boards category; Hi, Does anyone know how the power is supplied to the hard drive of a laptop? I have one and ...

  1. #1
    Funniest man in this seat minesweeper's Avatar
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    Laptop Hard Disk Power Connection

    Hi,

    Does anyone know how the power is supplied to the hard drive of a laptop? I have one and the only connection it has is the IDE cable. So can I infer from this that the power is supplied from the motherboard through the IDE and not from a PSU?

    If this is the case, will it be so simple as to plug in the IDE and away we go, everything works fine?

  2. #2
    5|-|1+|-|34|) ober's Avatar
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    I don't do much work on laptops, and don't own my own, but I have a hard time believing this. There almost has to be some sort of other power sources, UNLESS, some of the pins of the IDE are for power!?

  3. #3
    Funniest man in this seat minesweeper's Avatar
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    Yeah well that's what I was thinking. I am half inclined to plug it in and see but I thought I would post and see if anyone had some experience with them and could give a definitive answer.

  4. #4
    Registered User TravisS's Avatar
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    How new is your laptop? Are you sure it's the normal sized IDE cable, and not the new serial () conectors? The serial ones are smaller than standard IDE by a lot, and I'm pretty sure they also supply the power.

    I don't work on laptops either, so that's my best guess

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    power is supplied through the ide on just about all laptop hard drives, they done it that way to conserve power.

  6. #6
    Registered User TravisS's Avatar
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    scott, do you know if standard desktop IDE channels supply power too? This sounds kinda intersting to me, I've never worked on a laptop before.

  7. #7
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    yes they supply power, but they only cut on the chipset so to speak.for the most part the only reason for a power cable on a BIG desktop hard drive is to actually turn the disk inside the drive because it uses so much power. its somewhat like a lan crossover cable. they tell you to hook up 8 wires, but only 4 of them are used (all 8 of them were used in legacy devices). anyway, theres a big differance in laptop hard drives and desktop hard drives.

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