Lacie Power Question

Discussion in 'Mac Basics and Help' started by Zeviet, Mar 9, 2010.

  1. Zeviet macrumors newbie

    Jan 9, 2009
    I have a LaCie external hard drive and the power went bad, so I took the power from the other LaCie hard drive. The drives seems to work now, but the power configuration is different. I wanted to know if I should buy the same power supply, or I'm I going to be safe?

    Original Power Supply

    50-60Hz 1.5A
    Output - 5V-----4.2A

    MODEL NO:ACU057A-0512

    Replaced with this Power Supply

    50-60Hz 1.0A
    Output - 5V-----2.0A 10W
    12V---2.0 26.4W


    Model NO:ACU057A-0512

    Thanks in advance, :)
  2. wackymacky macrumors 68000


    Sep 20, 2007
    38°39′20″N 27°13′10″W
    Umm.. It's not clear to me what you've done.

    Are you now running two drives simultaneously off one power supply, (that has a lower wattage than then original)?

    Or have you just switched the 4.2A with the 2.0A?

    In either case using the lower wattage power supply may cause it to generate additional heat (as you are overloading it) which isn’t going to be good for your HD.

    If the power supply fails while the drive is writing you are putting your data at risk.
  3. Zeviet thread starter macrumors newbie

    Jan 9, 2009
    I'v replaced original power with another another LaCie power, (lower wattage). Do you think I can use the hard drive until I order a replacement power supply, or is that not recommend?:confused:
  4. Heb1228 macrumors 68020


    Feb 3, 2004
    Virginia Beach, VA
    I don't think you'll see any immediate effects. Long-term it may cause either the power supply or the controller board to die before it otherwise would have.

    I have 3 Lacie external HDDs and have had 2 power supplies go bad among them. At over $20 an issue, LaCie has about lost my future business. Both have happened a few months past the 12-month warranty.

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