This is a Buffalo 4TB NAS LinkStation LS520DN0402B. The HDDs have been replaced with two Western Digital 2TB drives, totaling 4TB. This is a used item, and its normal operation has been confirmed. The exterior has no cracks or other damage, but there is a noticeable scratch on the right side. Also, there are minor scratches overall. If there are any problems such as malfunction or discrepancies from 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. ■Included Items Main unit AC adapter (non-genuine 12V 4.16A) ■Initial Settings ID: admin PW: password1 ■Shipping Method Yu-Pack 60 size *Shipping will only be on weekdays. ■Management Number A909-129