SATA= Serial ATA, the hard drive interface being used in Power Macs, iMacs, and some PC laptops. It's faster than the current interface. Other than that, I have a media card reader in my PCMCIA slot so I can just plug the card from my digital camera into that and not have to carry an extra USB cable around...that and tranferring the pictures this way saves battery life on your camera...very useful when on vacation.