Item Condition: Used or Seller USEDHDD with Serial Number: 57TNFF25SA31Model: MK8037GSXHDD Code: HDD2D61 B ZL01 SFirmware: A0/DL230MProduct of: ChinaPCB Revision: G5B001851000-AHDD with Serial Number: 57BIF98SSA31Model: MK8037GSXHDD Code: HDD2D61 B ZL01 SFirmware: A0/DL230MProduct of: ChinaPCB Revision: G5B001851000-ARequest Internal HDD Info (i.e. Heads Map, MicroJogs, etc.)The hard drive listed is the same hard drive that is on the picture. Picture is not a stock photo; it is the picture of an actual item sold. If item description and the picture vary, please contact us for clarification. We will gladly look up any other information about this hard drive, in case the information that you are looking for is not specified in the listing and not clear on the picture.This hard drive is a perfect candidate to be used as a donor part for hard drive repair and data recovery purposes. We do not recommend purchasing this hard drive for retail and regular use, since the price may not always be corresponding with current industrial "per Gigabyte" rates. This donor hard drive is priced, based on its rarity, rather than capacity or condition.Storage unit has been completely tested and is determined fully functional. Our tests include: reading, writing, sector errors, sector timeout, and SMART check. Unit has successfully passed all tests. Most of our items are used, however, certain units may be new, some may be USED. The exact condition is not specified, so consider this unit to be "Used" or judge by the image.