I need to add additional USB 2 ports to my G5 Dual because I have a lot of USB devices. When I tried to put a standard usb 2 PCI card in my Mac I found only large PCI-X slots?! The smaller PCI card which I had in my G4 doesn't seem to line up with the slots. I'm very confused. Do I need a different longer card or is there a G4 type PCI slot hiding somewhere? Any thoughts would be appreciated. Dave Whelpley