Type: External Operating Systems Supported: Mac OS X 10.4.10+, 10.5.2+ Windows 2000/XP/Vista System Requirements: Available USB port, FireWire 800 or 400 port, eSATA port or eSATA adapter card Note: The 4 TB version works with Windows Vista only. Windows 2000/XP do not support hard drives with capacities above 2 TB. Features: The speed you need - Lightning-fast FireWire 800 combined with RAID 0 (Striped) yields the speed you need for smooth video editing, rendering complex 3D objects or special effects and saving huge blocks of data in record time. Cooler, quieter, eco-friendlier - Designed to use only drives with WD GreenPower Technology, this system uses about 30% less energy than standard systems and runs quietly because it doesn't need a fan. Formatted for Mac - Compatible with Apple's Time Machine. Includes software and instruc...