Samsung G2 Portable External Hard Drive HX-MU064DC/ GB2 Lightweight and Compact -- The G2 is pocket-sized and USB powered for easy portability Easy to Use - Simple and Secure backup of your most-important data SafetyKey software included -- provides password protection to prevent unauthorized access to your data SecretZone software included -- creates a virtual drive that encrypts confidential info for extra security Compatible with Windows 2000 Pro / XP / Vista / 7. Compatible with MAC OS X 10.4.8 or later.