Wishlist Quick view WESTERN DIGITAL WESTERN DIGITAL WD6400AAVS 640gb-5400rpm Sata-ii Hard drives $86.96 $59.97 WESTERN DIGITAL WD6400AAVS CAVIAR GREEN 640GB 5400RPM SATA-II INTELLIPOWER 8MB BUFFER 3.5INCH POWER-SAVING HARD DISK DRIVE. REFURBISHED. IN STOCK. Compare Add to Cart Add to Wishlist