Mac Pro with USB Devices Disabled error

Discussion in 'Mac Pro' started by joot, Sep 23, 2016.

  1. joot macrumors member

    Joined:
    Nov 3, 2006
    #1
    I have a Mac Pro flashed from 4,1 to 5,1 on El Capitan with 12 core 3.3 mHz cpu, 64GB ram, GTX670 gpu and an Innatek USB 3.0 pci card. I've been getting the "USB devices disabled, unplug the devices using too much power to re-enble USB devices" error message. I've taken out the GTX 670 gpu and put in the original gtx120 card and still get the same error messages. Anybody have any recommendation, suggestions to try next to rid of this error message?
     
  2. pastrychef macrumors 601

    pastrychef

    Joined:
    Sep 15, 2006
    Location:
    New York City, NY
    #2
    Do you get the error when you remove the USB 3 card?
     
  3. joot thread starter macrumors member

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    Nov 3, 2006
  4. h9826790 macrumors 604

    h9826790

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    #4
    Is there anything connected to the USB 3.0 card? It sounds like ask you to remove the USB device that drawing too much power, but not the PCIe card.
     
  5. joot thread starter macrumors member

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    Nov 3, 2006
    #5
    Nothing is connected to the USB 3.0 card at all
     
  6. h9826790 macrumors 604

    h9826790

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    #6
    Is there any newly installed hardware? Or this warning just suddenly pop up?
     
  7. joot thread starter macrumors member

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    Nov 3, 2006
    #7
    No new hardware installed. It pop up couple weeks ago...
     
  8. ActionableMango macrumors 604

    ActionableMango

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  9. joot thread starter macrumors member

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    Nov 3, 2006
    #9
    Inateck Superspeed 4 Ports PCI-E,USB 3.0 4-Port Express Card Desktop KTU3FR-4PA
     
  10. pastrychef macrumors 601

    pastrychef

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    Sep 15, 2006
    Location:
    New York City, NY
    #10
    Try removing the USB 3 card and see if the error still pops up.
     
  11. ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #11
    Do you see a "revision B2" or anything like that silkscreened on the card?

    If I recall correctly, the original version of that card (prior to B2) requires supplemental power to be connected in order to work consistently. The "revision B2" does not, even though it still has the power connector. There was so much confusion about this that Inateck later removed the power connector and bumped it to a different model name, KT4004.

    I have seen that exact error message before, and it was with a USB 3.0 card that inconsistently needed supplemental power to be attached, even with no USB devices attached. This seems to match your scenario exactly.
     
  12. joot thread starter macrumors member

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    Nov 3, 2006
    #12
    It does say REV:B2 below the model # on the PCB
     
  13. joot thread starter macrumors member

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    Nov 3, 2006
    #13
    The took the USB 3.0 card out and no more error messages!!!!
     
  14. ActionableMango macrumors 604

    ActionableMango

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    Sep 21, 2010
    #14
    I'm at a loss then.

    For troubleshooting purposes I'd install a fresh copy of OS X onto a spare drive and see if the card has problems there. If it does, you have a hardware problem. If it works fine, then there's something going on in the software.
     
  15. joot thread starter macrumors member

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    Nov 3, 2006
    #15
    The problem is the USB 3.o card. Took it out and the error message is gone...
     
  16. ActionableMango macrumors 604

    ActionableMango

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    Sep 21, 2010
    #16
    Well, yes. I had assumed you wanted to fix the problem and have USB 3.0.
     

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