This is a Synology DiskStation DS116. - Model: DS116 - Brand: Synology - Function: NAS (Network Attached Storage) - Status Indicators: STATUS, LAN, DISK LED indicators There are some scratches on the case (the most noticeable one is in photo 4), but it works without any problems. An AC adapter and screws for fixing the HDD are included. * HDD is not included. ■ Specifications Product Name: Synology DiskStation DS116 Supported Storage: 3.5/2.5 inch SATA drive x 1 Transfer Speed: Read 112.53MB/s, Write 111.41MB/s CPU: 1.8GHz Dual Core (Marvell ARMADA 385 88F6820) Memory: DDR3 1GB Interfaces: USB 3.0 x 2 Ethernet: Gigabit Ethernet x 1 (Reference) https://www.ask-corp.jp/products/synology/soho-smb/diskstation-ds116.html ■ OS, Document Downloads https://www.synology.com/ja-jp/support/download/DS116?version=7.2#system