<ul><li>Sold Individually</li></ul> From the Manufacturer WD Caviar Blue Hard Drives Value and reliability for everyday computing. WD Caviar Blue SATA hard drives deliver solid performance and reliability making them a perfect solution for both family and business computing. Why you should choose WD Caviar Blue: A wide array of capacities, cache sizes, and interfaces means there's a WD Caviar Blue hard drive that's just right for you. And because it's from WD, you'll have the confidence in knowing you've selected a drive that's truly world-class. The original. These drives are built utilizing the proven technology of the original 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. Ample capacity. Store up to 640 GB of photos, videos, music and files. Features at a glance 640 GB of desktop storage SATA 3 Gb/s interface WD quality and reliability Ideal for: Family and business computing Adding storage in desktop PCs or external drives Adding extra storage space for photos, videos and music Features: SATA 3 Gb/s interface - The industry standard and most common interface. Cool operation - 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 to give our customers confidence that our drives will work in their systems. 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. Desktop / Consumer RAID environments - WD Caviar Blue Hard Drives are tested and recommended for use in consumer-type RAID applications. (RAID-0 / RAID-1)* *Business Critical RAID Environments WD Caviar Blue Hard Drives are not recommended for and are not warranted for use in RAID environments utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as they are not designed for, nor tested in, these specific types of RAID applications. For all Business Critical RAID applications, please consider WD's Enterprise Hard Drives that are specifically designed with RAID-specific, time-limited error recovery (TLER), are tested extensively in 24x7 RAID applications, and include features like enhanced RAFF technology and thermal extended burn-in testing. Upgrading your drive is easy - WD Acronis TrueImage, available as a free download on the WD Support site, enables you to copy all your data to a new drive so you don't have to reinstall your operating system to get all the benefits of a new drive. Note: Bare drive does not include any cables or mounting hardware. The WD advantage - WD puts our products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. On average, each new product goes through 600,000 hours of testing. WD also has a detailed Knowledge Base with more than 1,000 helpful articles. You can also call toll-free support 7 days per week in the U.S. and Canada. See the WD Support site for full details. WD-certified packaging - All WD drives purchased from Amazon.com are shipped in WD-certified hard drive packaging. It is designed and fully tested to provide WD products with the highest of safety while in transit. With WD-certified packaging, you can rest assured that your WD hard drive will arrive safely, fully protected, non-descript, easy-open package. Compatibility Works with Windows 7/Vista/XP/2000, Mac and Linux operating systems. You might also consider: 3.5-inch Internal Comparison Chart WD Caviar Blue WD Caviar Green WD Caviar Black WD VelociRaptor Value and reliability for every day computing. Cool, quiet. Maximum performance for power computing. The fastest SATA hard drive on the planet. Ideal for Family and business computing. Desktop PCs, external drives and NAS devices. Photo and video editing, and maxed out gaming systems. Performance enthusiast systems and workstations. Capacity range 80 GB 1 TB 320 GB 3 TB 500 GB 2 TB 150 GB 600 GB Interface SATA 6 Gb/s SATA 3 Gb/s PATA 100 MB/s SATA 6 Gb/s SATA 3 Gb/s SATA 6 Gb/s SATA 3 Gb/s SATA 6 Gb/s Form Factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch Cache 8 MB 32 MB 16 MB 64 MB 32 MB 64 MB 32 MB Limited Warranty 2-year 2-year 5-year 5-year Highest capacity Highest performance Photo Video editing Product Description Western Digital Caviar Blue 640 GB Bulk/OEM Hard Drive 3.5 Inch, 16 MB Cache, 7200 RPM SATA II WD6400AAKS

Western Digital 640 GB 3.5-Inch, 16 MB Cache, 7200 RPM SATA II Bulk/OEM Hard Drive WD6400AAKS (Caviar Blue)