WD Elements portable hard drives with USB 3.0 offer reliable, high-capacity storage to go, fast data transfer rates, universal connectivity and massive capacity for value-conscious consumers. 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. Fast transfer rates – When connected to a USB 3.0 port, WD Elements portable hard drive delivers fast data transfer rates. Improve PC performance – When your internal hard drive is almost full your PC slows down.