The Seagate?????? Expansion portable drive is compact and perfect for taking with youon the go. Add more storage space to your computer instantly and take large fileswith you when you travel.Set-up is straightforward: simply connect a single USB cable and you are ready to go.The drive is powered from the USB cable, so there is no need for an external powersupply. Also, it is automatically recognised by the Windows?????? operating system, sothere is no software to install and nothing to configure. Saving files is easy ????????? simplydrag and drop.Take advantage of the fast data transfer speeds with the USB 3.0 interface byconnecting to a SuperSpeed USB 3.0 port. USB 3.0 is backward compatible withUSB 2.0 for additional system compatibility.