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Quick question about voltage for laptop drive in Desktop

  • 28-07-2011 02:57PM
    #1
    L
    Registered Users, Registered Users 2 Posts: 656 ✭✭✭


    Hey all,

    I've a quick question - I've read that 2.5 inch Hard Disks use 5 volts as opposed to the 12 volts 3.5 inch hard disks normally use.

    Is that accurate and is it a problem for installing them, or will a standard Molex to sata cable do the job without wrecking the drive?

    Cheers for the help (I'm a little paranoid in case I wreck my SSD by accident)


Comments

  • #2
    deconduo
    Moderators, Computer Games Moderators Posts: 4,282 Mod ✭✭✭✭deconduo


    As long as its not a cheap PSU with bad voltage regulation you'll be fine.


  • #3
    Voodu Child
    Closed Accounts Posts: 6,706 ✭✭✭Voodu Child


    SATA power cables supply 12V and, 5V on separate wires (also can have a 3.3V wire but not commonly supported/used).

    The drive uses whatever it needs, so a 3.5" drive uses 12V for the motor and 5V for the logic board. A 2.5" drive just ignores the 12V pins and uses 5V for everything.


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