This item is for one Western Digital WD3200BEVT-26A23T0 HHCVJHNB (WX61) Thailand 2.5" 320gb Sata HDD 26JUL2010. 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!