Mbox Mini Buzzes =(

[Doquan]

Just installed mbox2 mini onto computer the outputs on the box have a loud buzz. Buzz goes away if If I uplug the usb cable. Buzz comes back if I even just touch the cable to the usb plug on the computer but not even plug it in? ground problem? any suggestions plz

[Seventh Factor]

I have the same problem. I also get that 'usb power error' when running pro tools with no files or anything! I tried the mbox mini on a pc and it doesn't buzz. I'm really worried it's my new macbook pro. That buzz sounds like the usb power isn't very clean. I'm searching on here try to and find an answer. PT is almost unuseable at the moment for me.

[tbkbt]

have you tried using a different USB port on your computer? your not using a hub are you, i have experienced that before when using one. if you can use the USB directly on the motherboard or through another USB PCI card, not one of the convienient USB on the side of the tower. also have you tried it in someone's other PC and see if it still hums? i know on macs my tutors mac pro you have to use the left hand side USB for it to power his mbox.