Clickfree C2 2 Terabyte (2TB) SuperSpeed USB 3.0 External Hard Drive w/Automatic Backup (Black) Clickfree C2 2 Terabyte (2TB) SuperSpeed USB 3.0 External Hard Drive General Features: Black color Portable design 2 terabyte (TB) capacity 3.5-inch form factor SuperSpeed USB 3.0 interface Backwards compatible with USB 2.0 Smart Backup Smart Migration Music Manager CD/DVD Archiving Smart Restore Smart Viewer Multiple Windows Mac back up Activity LED Compatible with Microsoft Windows XP, Vista, 7 and Mac OSX 10.5 or later with Intel processor