My ACD and keyboard quite far away from my Mac Pro, and I have several peripherals that I need to connect that can't reach the Mac Pro. I'm wondering if plugging a USB 2.0 hub into one of the ports on the ACD will work? I seem to remember doing that in the past, and having problems with certain peripherals that didn't like being plugged in to a hub. Not sure if that had anything to do with the ACD, or if those peripherals wouldn't have worked through a hub regardless of what it was plugged in to.