WD ElementsTM SE portable hard drive with USB 3.0 offers super fast data transfers, compatibility with USB 2.0, and high-capacity storage in a plug-and-play design. USB 3.0 and USB 2.0 compatibility Universal compatibility for connectivity today and tomorrow. Works seamlessly with USB 2.0 now and with your USB 3.0 devices when you're ready. Maximum transfer rates When connected to a USB 3.0 port WD Elements SE portable hard drive delivers maximum performance for data transfers. Transfer a full-length HD movie in a fraction of the time it takes with USB 2.0. High-capacity in a small enclosure The small, lightweight design offers high-capacity storage, making WD Elements SE portable hard drives the ideal companion for value-conscious consumers who want to take their important files with them. 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 SE portable hard drive and get your PC moving again. WD quality inside and out We know your data is important to you. So we build the drive inside to our demanding requirements for durability, shock tolerance, and long-term reliability. Then we protect the drive with a durable enclosure designed for style and protection. Formatted for Windows Formatted NTFS and compatible with Windows XP, Windows Vista, Windows 7. Can be reformatted for Mac