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 1TB hard drive, you get compatibility with the latest USB 3.0 devices and backward compatibility with USB 2.0 devices, as well. Also available in 2, 3, 4, and 5TB sizes.