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 2.5TB Western Digital (HGST) drives, totaling 5TB, and their normal operation has been confirmed. The exterior has no noticeable scratches and is considered to be in good condition. The protective film is still attached to the front and top acrylic panels, so they should be scratch-free if peeled off. If there are any problems such as non-operation or discrepancies with the description, 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. *You do not need to confirm receipt immediately. Please do so after confirming operation. (You will be responsible for system usage fees, etc., for reporting defects after confirming receipt.) ■Included Items ・Main unit ・AC adapter (non-genuine, 12V 4.15A) ・DC jack conversion adapter ■Initial Settings 　ID: admin 　PW: admin999 ■Shipping Method ・Yamato 80 size ■Management Number MA909134 ■Search Keywords 4TB 6TB