Just a thought, you know how on the Apple Cinema displays they have 2 USB 2.0 ports and 2 Firewire ports on them? And on the end of the display cable there are 3 ends to it - the DVI, Firewire and USB. That way you can use the built in hub in the display. But how about if you have two cinema displays? Where do you plug in the USB and Firewire cables? Since there are two USB connecters on the back of the Power Mac G5s I assume just take up both USB ports, but how about the Firewire (400) port? There's only 1? I do have two 20" displays but one of them are the older plastic ones which only has the ADC (I think it's called that) port. So I'm just sorta curious. I looked at some dual 30" displays set up pics, but couldn't see anything like that to answer my question.