Synology DiskStation DS118, 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

Ports: 1 x RJ-45 1GbE LAN Port (with Link Aggregation / Failover support); 2 x USB 3.2 Ports

Processor: RTD1296 4-Core 1.4GHz CPU

Memory: 1GB DDR4 non-ECC Memory

Storage: 4TB (1 x 4TB) SATA 2.5" SSDs for Ultra-Fast, High-Speed Storage

Power: Single Power Supply

Operating System: Synology DSM Software

Features: Centralized Data Management, Data Sharing, Security Advisor, File Server/Management, 4K Multimedia Server role, Desktop and Mobile Backup, Synology Drive, and many more

NAS chassis comes in a sealed box.
Hard drives and memory upgrades included separately NOT installed, installation required.