Ultra-Fast USB 3.0 data transfers.Massive Capacity Formatted NTFS for Windows 10, Windows 8.1, Window 7. Requires reformatting for Mac OS X . Compatibility may vary depending on user’s hardware configuration and operating system. Free trial of WD SmartWare Pro auto and cloud backup software WD quality and reliability 1-year limited warranty SIMPLE, FAST AND PORTABLE 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. Don’t delete files. Free up space on your internal hard drive by transferring files to your WD Elements portable hard drive and get your laptop moving again. Brand WD SKU 100332151_NP-1020600137 Model WD Elements