Western Digital Caviar Black 640GB SATA Internal Hard Drive for $64.99 shipped after promo code EMCLTNP43. Here is a screenshot for your reference. The Black Edition has a 5-year warranty and is Western Digital’s high-performance product line of SATA drives that usually require a premium. More information can be found here. Note that it comes in OEM packaging, which means no pretty retail box but is otherwise identical.