This item is for one Seagate ST600MM0006 9WG066-004 FW:0004 600gb 2.5" SAS Hard Drive. This drive and all of our drives are professionally tested and cleaned on a DOD certified machine at Oem level. We do not use software for this process! Once they have passed our Quality control they are 100% in perfect working condition! We are always willing to upgrade shipping to a faster service if you pay the actual costs difference from our flat rate costs!