The enclosure is an Elecom NSB-5A8T2BL, with the firmware rewritten to that of the OEM product, QNAP TS-231P (QTS 5.2.7.3297, October 2025). The HDDs have been replaced with two 3TB SEAGATE drives, totaling 6TB, and both have been used for less than 1000 hours. The exterior has minor scratches, but there are no noticeable scratches or stains, and it is in relatively clean condition. If there are any malfunctions, discrepancies from the description, or other issues, please contact us within 5 days of arrival. We will provide a refund. *Please ask if you have any questions. *Please refrain from price negotiations. *We do not require immediate confirmation of receipt. Please confirm the operation after receiving the item. (You will be responsible for system usage fees, etc., for reporting defects after confirming receipt.) ■Included Items ・Main unit ・AC adapter (non-genuine, 12V 3.5A) ■Initial Setup ID: admin PW: admin999 ■Shipping Method ・Yu-Pack 60 size *Shipping will only be on weekdays. ■Management Number MA909126