WD Elements SE portable storage offers high-capacity to go, fast data transfer rates and universal connectivity with USB 2.0 and USB 3.0 devices. USB 3.0 and USB 2.0 compatibility Get compatibility with USB 3.0 computers and backward compatibility with USB 2.0 computers in this single drive. Improve PC performance When your internal hard drive is almost full, your PC may slow down. Don’t delete files. Instead, free up space on your internal hard drive by transferring files to the WD Elements SE portable storage to get your laptop moving again. WD quality inside and out WD Elements SE portable storage with enclosure is built to meet WD's demanding requirements for durability, shock tolerance and long-term reliability to help protect the data that's important to you