PORTABLE HARD DRIVE, WD, 500 GB, USB 3.0.  Original box which has never been opened.  Formatted NTFS for Windows 7, Windows Vista or Windows XP.  Requires reformatting for Mac OS X.  Contains Portable hard drive, USB cable, WD backup software, WD Security and WD Drive Utilities software; and Quick Install Guide.  Please see pictures for details of condition of box etc.  Thank you for bidding.