The GoFlex ultra-portable drive makes it easy to store, back up and encrypt all your files with its plug-and-play USB 3.0 connectivity, but this is no ordinary external drive. As the core of the GoFlex Storage System, the GoFlex ultra-portable drive is the world's most upgradable external drive allowing it to deliver a truly customizable experience. Use the included USB 3.0 Adapter or upgrade to FireWire 800 or eSATA by pairing the drive with the appropriate GoFlex upgrade cable. Extend your content beyond your PC and enjoy it on your TV, over your network or on-the-go by using it in combination with other GoFlex products.