Western Digital WD Blue (WD5000AAKX) - 500 GB, SATA3, 7200 RPM - The Original WD Blue drives are designed and manufactured with the proven technology found in WD's original award-winning desktop and mobile hard drives. - WD Quality Built to the highest standards of quality and reliability, these drives offer the features and capacity ideal for your everyday computing needs. - More Options These drives are available in a broad range of capacities, cache sizes, form factors and interfaces so you can be sure there's a drive that's the perfect fit for your system, in more ways than one. - Tested for compatibility 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. - 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.