Western Digital Caviar Green Hard Drive, 2TB: * Compatible with PCs, external storage, and other devices that require lower power consumption * Western Digital 2TB Hard Drive backs up your important files and data * Exclusive GreenPower technology * Western Digital SATA Hard Drive offers power saving technology * Reduces power consumption by up to 40 percent * Environmentally responsible * Western Digital 2TB Hard Drive is cool and quiet for a more relaxed and pleasant workstation