WD 1TB Silver My Passport for Mac Portable  External Hard Drive  - USB 3.0  - WDBLUZ0010BSL-NESN Ultra-fast transfer rates with USB 3.0 interface The Passport for Mac is 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 3 years limited warranty