Maxtor OneTouch 4 Plus 500 GB USB 2.0/FireWire 400 Desktop External Hard Drive 500 GB external hard drive connects to your computer via USB cable or FireWire 400 Simple Maxtor user interface for drive management, security, and backup scheduling Two levels of security against unauthorized use - Maxtor DrivePass and data encryption Sync data between 2 or more computers on the same operating system Drive and power management utilities; 5-year limited warranty