Seagate Expansion desktop drive, add-on storage for your PC and Mac The Seagate Expansion desktop drive provides extra storage for your ever-growing collection of files. Instantly add space for more files, consolidate all of your files to a single location, or free up space on your computer’s internal drive to help improve performance. Setup is straightforward; simply plug in the included power supply and USB cable, and you are ready to go. 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 too—just drag-and-drop. Take advantage of the fast data transfer speeds with the USB 3.0 interface by connecting to a USB 3.0 port. Plus, Seagate Expansion comes with Rescue Data Recovery Services for additional peace of mind.