hey so the time's come to add more USB ports to my g5 powermac. I'm just wondering if anyone can list the advantages/disadvantages of getting a USB card over a USB hub? I'm tempted to go with the card because it'll take up less space and mean less crud on the desk. But of cource that means sticking more ports on the back of my case and thus reaching behind everytime I need to plug something in. also if anyone has installed on in a g5 before and can recommend a decent one that would be gravy.