My system profile lists the USB Bus rate at 12mpbs. Does this mean that the version is 1.1? Hope I'm explaining this correctly. It is an iMac Power PC G4 17" flat panel machine purchased last November. I ask because I need a USB hub and am not sure if the models that supprot 1.1 and 2.0 will work. Wouldn't I need a 2.0 port; and the 480mpbs rate would be dumbded down to 12 would it not? What if a USB device is 2.0? Would a hub be required to translate the signals to the slower rate anyway? I just want to know what to buy that will work with my machine and whatever external hardware I intend to plug into it.