Seagate 3TB 3.5" SATA III internal hard drive, 7200RPM with 64MB cache — built for desktops, NAS, and surveillance recorders. High-capacity 3TB storage for PC, Mac, CCTV and DVR systems Fast 7200RPM spindle speed with a 64MB cache buffer Standard 3.5" SATA III (6Gb/s) form factor for easy drop-in installs Capacity 3TB Interface SATA III (6Gb/s) Speed 7200 RPM Cache 64MB Form Factor 3.5 inch Condition New, genuine New, genuine unit. Ships worldwide with DDP — all import duties paid.