Protect, store and access files through the interface of your choice with the world's most versatile drive. The GoFlex Desk external drive delivers high-capacity storage and automatic, continuous backup with encryption for all your files with its pre-loaded software. The included USB 3.0 plug-and-play adapter makes it easy to connect to your PC or Mac computer and it displays the drive's available storage capacity. The streamlined design complements any modern workspace, and as the world's most versatile external desktop drive, you now have the ability to upgrade your connection interface to suit your needs .The GoFlex Desk drive includes a USB 3.0 interface that provides up to 10x faster data transfer rates compared to USB 2.0 interfaces. USB 3.0 is backward compatible with USB 2.0 so you have the flexibility to access files from any PC. With the included NTFS driver for Mac, you can now interchangeably store and access files from PC and Mac computers without reformatting. The NTFS driver is simply installed on your Mac computer, allowing it to access and store files in a NTFS formatted drive . Reformatting to HFS+ required to use backup software for Mac or Time Machine software