Actually it's a USB 2.0 port on my dad's dual 1.8 G5. When I look at a USB 2.0 cable and a USB 1.0 cable, they look identical, same number of pins, same material and obviously same connector. Thanks for all the help, but I really do believe after doing some testing that it's just a marketing thing to make more money. What makes me think this, well... I just bought for my dad a USB 2.0 card reader that came with a USB 2.0 cable, when I connect it directly to the G5 it transfers 10 3.2 mega-pixel photos in 8 seconds and when I connect it directly to the G5's keyboard, it transfers 10 3.2 mega-pixel photos in 40 seconds. So now, I decide to be sneaky and use one of my old USB 1.0 cables and connect it to the USB 2.0 card reader and directly to my dads G5 and guess what, it still is fast!!! So like I said, I think it's a marketing ploy.