Mac Pro 2008 USB 3.0 HD reports as USB 2.0

Discussion in 'Mac Pro' started by sgginc, Oct 26, 2013.

  1. sgginc macrumors member

    Joined:
    Oct 5, 2006
    #1
    I have this Orico card:

    http://www.amazon.com/gp/product/B008V3THAC/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1

    Mac Pro 2008, 10.8.5.

    When I connect a USB 3.0 HD directly to the card
    it reports as USB 2.0 for the HD speed connection in Systen Prefs.

    When I run the connection thru a USB 3.0 hub it reports
    the HD speed as 3.0 in System Prefs.

    This condition is with a Sansdigital and a StarTech enclosure:

    http://www.amazon.com/gp/product/B003F5NS9W/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1

    Anyone know why?

    Thanks ... Ken
     
  2. Maxpecas macrumors newbie

    Joined:
    Feb 1, 2013
    #2
    Hello,

    The issue should be cause to the position of the card.
    Are you using it on PCI-E V2.0 Slot ( Slot 1 or 2 )
    Somes USB3 cards work only in USB2 mode plugged on Slot 3 or 4 ( PCI-e 1.0 slot )
     
  3. sgginc thread starter macrumors member

    Joined:
    Oct 5, 2006
    #3
    The USB 3.0 connections are fine if I go thru a USB 3.0 hub.
    Only when directly connecting the drive is it reported as 2.0.
    The card is recognized as 3.0.

    Thanks ... Ken
     

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