content: This thing was easy to intall. I have a Dual 1.25 G4 Mac. No driver installations under Panther 10.3.3. If you're pre 10.2.X on a Mac you'll have to visit Iogear's website for USB 2.0 drivers. You shouldn't have any problems using this card with a G5 given the bus supports PCI cards either. Apple should just sell this card in their stores. This is my first Iogear product, and this is the best combo firewire/usb PCI card currently on the market.