WL 4TB 64MB Cache 5400RPM SATA III (6.0Gb/s) 3.5 Internal Surveillance DVR Hard Drive - w/ 1 Year Warranty

- 4TB Capacity, 64MB Cache, 5400RPM, SATA III 6.0Gb/s - 3.5" Internal Surveillance Hard Drive - Quiet, Low Power & Heavy Duty, Designed for 24/7, works for Any Security CCTV DVR - Zero Bad Sector, Zero Power on Hours (POH), Sealed in Bag