HGST Deskstar 2TB 3.5-Inch CoolSpin RPM SATA III 6Gbps 32 MB Cache Internal Hard Drive (0F12117) 2TB Hard Drive Storage Capacity Cool Spin RPM, 32MB Cache and SATA III 6Gbps Built on award-winning proven design Excellent power utilization and heat emission Halogen-Free Design 2TB Hard Drive Storage Capacity CoolSpin RPM, 32MB Cache and SATA III 6Gbps Built on award-winning proven design Excellent power utilization and heat emission Halogen-Free Design