USB/Firewire Express Card

Discussion in 'MacBook Pro' started by NonLinearEdits, Jan 19, 2012.

  1. NonLinearEdits macrumors newbie

    Joined:
    Aug 9, 2011
    #1
    I have a 2007 era Macbook Pro that I use in a project studio for editing with FCP and Audio Production with Protools 10 and other various software. I recently had one of those cheaper BUS powered Lexington Alphia USB Audio I/O interfaces to power my KRK monitors. It worked fine with exception of a small buzz out of the left channel.

    However I upgraded to a Protools MBox Mini 3rd Gen and it was just outputting terribly distorted audio at any level. So after an hour and a half of a remote controlled service call with Avid I set up an RMA to return it.. at my expense to the retailer. I was frustrated that I had to pay to ship back something sent to me that was broken... so I said what the hell and tried it on my 2010 unibody macbook and it worked fine, worked fine on my Toshiba Windows 7 box as well.

    I meticously sifted through the Avid Audio forms for hours trying to find an answer... I saw someone that had the same issue and solved it by passing the MBox through a Powered USB Hub... so I said what the hell, I'll try and it viola... it worked. After more research I've come to find out my MBP had an issue with weak/unstable usb power output...

    So my question is, do you think I'll have any luck with better bus power coming out of a USB Express card? Does anyone have any recommendations on a good card for my MBP?
     
  2. thefizzle657 macrumors regular

    Joined:
    Oct 21, 2011
    #2
    AFAIK no Expresscard provides power, so you will either have to buy that that can be used with an AC adapter. At that point I thin you are better off with the USB hub.
     
  3. m85476585 macrumors 65816

    Joined:
    Feb 26, 2008
    #3
    There's an internal USB port in the Expresscard slot, and most USB expresscards just pass that through to a connector, so there would probably be no difference.
     

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