The Seagate Expansion portable drive is compact and perfect for taking with you on the go. Instantly add more storage space to your PC or Mac and take large files with you when you travel.Setup 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 power supply. Plus, it is automatically recognized by the Windows or Mac operating system, so there is no software to install and nothing to configure. Saving files is easy - just use the included Seagate Toolkit backup software for on-demand and automatic backup of your Windows files.Take advantage of the fast data transfer speeds with the USB 3.0 interface by connecting to a USB 3.0 port.