Seagate Barracuda ST500DM002 500 GB 3.5 Internal Hard Drive - SATA - 7200 rpm - 16 MB Buffer 1-Year Mfg Warranty Seagate ST500DM002 SEAGATE ST500DM002 Barracuda 7200.12 500GB 7200 RPM 16MB cache SATA 6.0Gb/s 3.5 internal hard drive (Bare Drive)