Western Digital My Book Studio Edition II 4000GB Grey external hard drive

My Book Studio Edition II - 4 TB 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 instructions for reformatting to Windows.

Quad interface - Power your creativity with connections for ultra-fast eSATA and FireWire 800. For flexibility and convenience, FireWire 400 and USB 2.0 are also included.

User serviceable - Want to upgrade a drive? Simply open the case and replace the existing drive – no screwdriver needed.

Automatic backup software - Back up important projects to multiple destinations including file servers, portable drives and My Book. Set it and forget it; every time you save a change it's automatically backed up.

Capacity gauge - See at a glance how much space is available on your storage system.

Intelligent drive management features - Automatic power-up, Safe Shutdown, and LED status and activity lights make this storage system especially easy to use. (Works with USB and FireWire connections only.)