Built to Western Digital's awarding winning quality standards, these drives are available in a full range of performance features. Features: Ideal For Lots of storage in desktop PCs or external drives and NAS devices. Reduced power consumption. Reduced power consumption makes it possible to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation. Cool and quiet. WD GreenPower Technology yields lower operating temperatures for increased reliability and low acoustics perfect for ultra-quiet PCs and external drives. SATA 6Gb/s Drives WD is leading the way with a full lineup of SATA 6 Gb/s drives Over the years the industry has increased bus bandwidth from PATA through SATA 1.5 Gb/s and SATA 3 Gb/s to keep up with the demand for higher transfer rates. The next evolution of bus bandwidth has now been achieved with the introduction of SATA 6 Gb/s, (SATA 3.0). We've added a SATA 6 Gb/s interface to our award-winning WD Caviar Blue, Green, and Black desktop hard drives in capacities from 250 GB - 3 TB. This transition to a SATA 6 Gb/s interface aligns with the introduction of SATA 6 Gb/s-supporting chip sets and motherboards coming to the market. The . These drives are built utilizing the tried and true proven technology of the award-winning WD Caviar 3.5-inch hard drives for desktop computers. Value. Built to the highest standards of quality and reliability, these drives offer features and capacity at an affordable price. Solid performance. With SATA 6.0Gb/s interfaces, and cache sizes up to 32 MB, this series of drives offer a full range of performance features. Capacity. We offer WD Caviar Green drives with capacities from 500GB because you can never have too much storage space. Ultra cool and quiet. Keeping the drive cool enhances reliability. WD continues to develop new and innovative ways to keep drives cool while they are operating which helps protect the drive and the data stored on it. Compatible. We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab and Mobile Compatibility Lab to give our customers confidence that our drives will work in their systems. ShockGuard. Instantaneously protects the hard drive against damage from bumps and vibrations while it is running. This technology enables WD Caviar drives to achieve industry-leading shock specifications. NoTouch ramp load technology. The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise and vibration. Specification: Manufacturer Western Digital Manufacturer Part # WD5000AZDX Data Storage Formatted Capacity 500GB Data Transfer Rate To/From Media 6.0Gb/s Buffer 32 MB Seek Time Average 8.9 ms Rotational Speed IntelliPower Interface SATA 3 (6.0Gb/s) Dimensions (H x W x D) Unit 4 in x 5.8 in x 1 in Weight Unit 1.4 lbs System Requirements PC n/a Mac n/a Warranty 1 Year Warranty Includes in the Box Sealed Bulk Pack