Buffalo LS-420D0802C 8TB (4TB x 2) BUFFALO NAS with 8.0TB storage - Brand: BUFFALO - Model: LS420D0802C - Storage Capacity: 8.0TB - Ports: USB 2.0, LAN port - Design: Black with red accents Accessories include CD-ROM, startup guide, AC adapter set, and LAN cable. Thank you for viewing. This is a hard disk for network use, purchased in July 2016. It was mainly used for backups. It cannot be connected directly to a PC. The supported OS is as shown in the photos. Please download and use the latest NAS Navigator2. To use it with Win11, please refer to: https://www.buffalo.jp/news/detail/20241226-01.html (It seems that you need to change the settings from the control panel) To use LS-420D0802C with Windows 11, you mainly need to add Windows credentials and enable SMB1.0. (AI response) However, please note that we cannot guarantee its operation. The purchase date is written on the outer box. Also, the item has scratches as shown in the photos and traces of labels affixed with a label maker for identification. There are no operational problems. We have confirmed the operation, performed a zero-format, initialized it, and returned it to its initial state before shipping. (It was used until just before listing) If it cannot be recognized by NAS Navigator2, it may be due to overlapping IP addresses, or the firewall of your PC's security software may be active. We do not accept returns for operational problems caused by your PC environment. *Seller's note: NASHDD19