WD My Passport for Mac 500GB Portable External Hard Drive Storage USB 3.0 (WDBLUZ5000ASL) [Certified Refurbished] - w/1 Year Warranty Ultra-fast transfer rates with USB 3.0 interface Formatted for Mac - HFS+ journaled so it works right out of the box with your Mac computer, but it can be reformatted for Windows. It is also compatible with Apple Time Machine backup software. Password protection and hardware encryption by WD Security Adding extra storage for your videos, music, photos, and files 6 Month Direct Factory Warranty, Worry Free Return! 100% Full Refund