Key Features Maximum transfer rates USB 3.0 connectivity delivers maximum performance for transferring files to and from this drive. High-capacity in a sleek design 3TB capacity in a lightweight design, this drive is the ideal companion for users on the go. Free backup software trial WD Elements portable storage comes with a trial version of WD SmartWare Pro backup software, which allows you to back up your files to your WD Elements drive or to the cloud using your DropBox account. USB 3.0 and USB 2.0 compatibility With this single drive you get compatibility with the latest USB 3.0 devices and backward compatibility with USB 2.0 devices as well. Improve PC performance When your internal hard drive is almost full your PC slows down. Don't delete files. Free up space on your internal hard drive by transferring files to your WD Elements portable storage and get your laptop moving again. WD quality inside and out WD build the drive inside to our demanding requirements for durability, shock tolerance, and long-term reliability. Formatted for Windows Formatted NTFS and compatible with Windows 8, Windows 7, Windows Vista or Windows XP. Can be reformatted for Mac.