3TB Hard Drive, 64MB Cache, 7200RPM, SATA III 6.0Gb/s Enterprise Class Hard Drive | Enterprise Grade, 3.5" Internal Hard Drive, Designed for 24/7/365 Heavy Duty, Reliable | Works for Servers, Desktop PC/Mac, RAID, NAS, Surveillance System, CCTV DVR | Bare Drive Only, Single Pack, (No Screws, Cables or Accessories included) -Friendly Reminder- Please FORMAT HDD on system in order to be detected/shows on system. | (Discontinued Model) 3 Year Warranty from Reseller, Worry free Return! 100% Full Refund