USB 3.0- enough power..?

Discussion in 'MacBook Pro' started by John Fridinger, Aug 10, 2012.

  1. John Fridinger macrumors newbie

    Joined:
    Jul 25, 2012
    #1
    In a 2012 cMBP that is on its way I'm going to be replacing the 750/7200 HD with a Samsung 830, and putting the HD into a USB 3.0 Sata 3 external enclosure for back up... Does USB 3.0 provide enough power to the HD, or is an enclosure with additional power necessary..? And if so, such as..?

    And a connected question, if hooked to a USB 2.0 connection on another machine, enough power there...?

    Many thanks for all the great info in these threads...
     
  2. geoffreak macrumors 68020

    geoffreak

    Joined:
    Feb 8, 2008
    #2
    A 2.5" drive can usually be powered over the bus (especially on Macs). I don't see very many externally powered 2.5" enclosures anyways.
     
  3. terraphantm macrumors 68040

    Joined:
    Jun 27, 2009
    Location:
    Pennsylvania
    #4
    USB 3.0 should be able to provide enough juice to pretty much all 2.5" drives since it can supply a decent bit ore current than USB 2.0.

    The enclosure should work in a USB2.0 port, but you *may* need one of those 2-ended USB cables to get extra juice from a second port.
     
  4. John Fridinger thread starter macrumors newbie

    Joined:
    Jul 25, 2012
    #5
  5. Orlandoech macrumors 68040

    Orlandoech

    Joined:
    Jun 2, 2011
    Location:
    Salt Lake City, UT
    #6
    Just ordered one myself lol.
     

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