Synology DiskStation DS223, made for a variety of server roles such as backup, file storage, email servers, and domain controllers! Form Factor: NAS Tower Server Internal File System Format: EXT4, Btrfs Ports: 1 x RJ-45 1GbE LAN Port (with Link Aggregation / Failover support); 3 x USB 3.2 Ports Processor: RTD1619B 4-Core 1.7GHz CPU Memory: 2GB DDR4 non-ECC Memory Storage: 40TB (2 x 20TB) SATA 3.5" HDDs for High-Capacity Storage Power: Single Power Supply Operating System: Synology DSM Software Features: Centralized Data Management, Data Sharing, Security Advisor, Surveillance, File Server/Management, 4K Multimedia Server role, Desktop Backup, Synology Drive, and many more NAS chassis comes in a sealed box. Hard drives and memory upgrades included separately, not installed, installation required.