Fast 3.0 USB Not Recognized

Discussion in 'MacBook Pro' started by Sztipa, May 10, 2012.

  1. Sztipa macrumors newbie

    May 10, 2012
    Around the World
    Hello All,
    I have a problem with my Mac Book Pro - Lion. the USB 3.0 is not recognized.
    I formated but still. What should I do??
    thanx for your help in advance.
  2. Freyqq macrumors 601

    Dec 13, 2004
    Macs don't have USB 3, but it should still work at USB 2 speeds. USB 3 and USB 2 are suppose to be backwards compatible.
  3. shmonkus macrumors member

    Feb 14, 2012
    United Kingdom
    You can buy USB3 ExpressCard dongles if you have the 17" MBP (providing there are drivers for it) but otherwise, USB3 will not be fully utilised until Ivy Bridge.
  4. heisenberg123 macrumors 603


    Oct 31, 2010
    Hamilton, Ontario
    I can only assume all USB 3.0 are backwards compatible for 2.0 but read the box it it says 3.0 only than there is you answer
  5. williamspalex macrumors newbie

    Apr 25, 2012
    I may be wrong, but I thought that the backwards compatabilty meant that a USB 2.0 device will work in a USB 3.0 hub.
  6. \-V-/ Suspended


    May 3, 2012
    It will. USB 3.0 is backwards compatible with 2.0.
  7. Bear macrumors G3

    Jul 23, 2002
    Sol III - Terra
    A USB 3 device plugged in to a USB 2 port will run at USB 2 speeds.

    A USB 2 device plugged in to a USB 3 port will run at USB 2 speeds.

    The benefit of getting a USB 3 device (where the device can take advantage of the speed) is Macs will have USB 3 ports eventually (hopefully soon) and then you'll get the improved performance of USB 3.

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