The lacie rugged triple hard disk provides universal connectivity youve got the superior speeds of usb 30 and firewire 800 and full backward compatibility with firewire 400 and usb 20 you can transfer a 700mb video file in less than 7 seconds with usb 30 compared to 25 seconds with usb 20 with the rugged triples 7200rpm model you can even achieve speeds up to 110mbs additionally you can use the lacie mac usb 30 driver to improve data transfer speed on your mac up to a 30 perform