The GoFlex™ ultra-portable drive makes it easy to store, back up and encrypt all your files with its plug-and-play USB 2.0 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 upgradeable external drive allowing it to deliver a truly customizable experience. Use the standard USB 2.0 interface or upgrade to USB 3.0, 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.