* Interface : USB 3.0/USB 2.0
* Up to 3x faster transfer rates .
* Universal connectivity .
* Local and cloud backup .
* System-level backup .
* Secure your files .
* WD Drive Utilities software .
* WD quality inside and out .
* System Requirements .
* Formatted NTFS .
* Windows XP, Windows Vista, Windows 7, Windows 8 .
* Mac OS X 10.6.5 or later (requires reformatting) .
* Dimensions : 6.73" x 1.93" x 5.47" .
* Weight : 2.27 lbs .