Refurbished model of WD Black 500 GB Internal HD - SATA - 40" - 7,200 RPM - WD5003AZEX. WD 500 GB SATA 3.5 Inch Drive Internal 7200 rpm a WD Black. Sophisticated performance enhancing features deliver the speed you need for demanding applications like photo and video editing and Internet gaming. High performance, high capacity, high reliability, and cutting-edge technology make up WD Black, the ideal drive for those who demand only the best. WD Refurbishing is reliable and guaranteed to work like the original.