Erased (DoD 5220.22 M Compliant) and tested good (Not formatted, partitioned, or allocated). Sold as used and in working condition. There may be drives that have up to 25 bad sectors. There may be writing or markings on the drive or the drive may vary slightly (color and/or label may differ) from picture but the model numbers will be the same. The key function is to semi-permanently hold information form the computer. We test by checking visibility in the system, S.M.A.R.T status is checked for failing attributes, number of bad sectors is 25 or less (10 or less for SAS drives), drive health is checked to verify higher than 90% (SAS drives only). All products listed have passed all tests prior to listing.