Hey there, I have bought a new Imac and I was trying to hook it up with my Mbox 2 Pro. The first thing I noticed was that I had a firewire 800 connection in my new and improved mac and a lousy firewire 400 connection in my mbox. Soo, I went to the mac store and got a Sonnet 400 to 800 adapter. When I plugged in my Mbox to the computer.....nothing happened. My soundcard just blinks with the orange light so there is a connection but that's it. I have Logic Pro 8 installed on my Imac. Do I need drivers for this card with my imac? I have not yet installed Pro Tools LE (that comes with the MB2) but when I used this with Logic Pro 8 on my old Mac book it worked fine. However with no adapter between them. Plain old 400/400. So if you got a clue, PLEASE let me know! Have a nice day folks!