date=1274727868]
Well this could be positive (mobo replacement--not the suicide/murder)
I'm assuming you've tried various usb things and they all work, don't work, fail?
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Everything *seems* to work with the exception of the Tascam & Presonus units. But to be fair, I haven't plugged much else in - USB hard drive, keyboard, mouse, and Alphatrack, that is it. All those worked fine. However, the fact that 2 seperate known-good interfaces both crapped when plugged into this system tells me something is not right.