Hi, I thought I would let you know that once I connect my new laser printer to the USB bus, that I have to unplug it from the USB port (not just turn off the power to the printer) in order to get ProTools (M-Box) to play back more than one track for more than 3 seconds at a time. Plus I have to make sure that this is the case on Boot, otherwise I have to re-boot before being able to run ProTools. I found it odd that Mac has gone to only one USB card system; I'm glad to hear that the FW ports are two separate cards (2 i/o x400 is one card, and 1 i/o x 800 is the other). I just hope that apple continues with separate FW busses, and also reconsiders its' stance on a single USB bus system. Thanks, and best, Alyssa Ryvers