WD Green Desktop 1TB SATA 6.0 GB/s 3.5-Inch Internal Desktop Hard Drive Retail Kit Includes free cloning software 3.5- Inch SATA hard drive and SATA 6 Gb/s interface. WD Green hard drives reduce power consumption by up to 40% and offer best-in-class acoustics and operating temperature and 3rd generation SATA interface IntelliPower - A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings and solid performance. 2 year limited warranty Reduced power consumption Environmentally responsible Cool and quiet Reduced power consumption by up to 40%