Mac Pro with USB 2.0 card and molex mystery

Discussion in 'Mac Pro' started by Denarius, Mar 14, 2011.

  1. Denarius macrumors 6502a

    Denarius

    Joined:
    Feb 5, 2008
    Location:
    Gironde, France
    #1
    Hi there,

    I've just got a USB 2.0 card for our Mac Pro which seems to need a power supply via molex. The box says the card is OSX compatible, but I'm a bit stumped as I can't find a Molex power cable to supply it. What am I missing?
     
  2. Denarius thread starter macrumors 6502a

    Denarius

    Joined:
    Feb 5, 2008
    Location:
    Gironde, France
    #2
    S'alright, solved it. 4-pin molex in the DVD drive bay. Ran a long molex between there to the pcie slots. Can just get through between the case and the side cover.
     
  3. bluesteel macrumors 6502

    Joined:
    Apr 5, 2007
    Location:
    Earth
    #3
    i have never seen a USB PCI card that needed molex power. every one i have ever used just pops into the PCI slot and that's it. what brand is yours?
     
  4. Denarius thread starter macrumors 6502a

    Denarius

    Joined:
    Feb 5, 2008
    Location:
    Gironde, France
    #4
    It's a Dexlan. I was surprised when I discovered it as well. It has got five usb 2 ports on it, but I'm surprised the PCIE bus can't provide enough power for it. But then I've seen 2 port usb 2 pcie cards that need power via molex as well, so what do I know? If anyone can shed light on why, then I'd be interested to know.
     
  5. bluesteel macrumors 6502

    Joined:
    Apr 5, 2007
    Location:
    Earth
    #5
    5 extra USB ports is nice. but yeah, not sure why they require molex. hey, if it works, that's all that matters :)
     

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