HGST/Hitachi Deskstar 7K3000 HDS723020ALA640 2TB 7200RPM 64MB Cache SATA III (6.0GB/s) 3.5" Internal Desktop Hard Drive (PC, Mac, CCTV DVR, NAS, RAID)w/1 Year Warranty Capacity: 2TB Rotation Speed: 7200RPM 64MB Buffer Size Interface: 3.5" SATA 6.0Gb/s Warranty: 1 Year Warranty (return to point of purhcase)