Synology DiskStation DS420+, 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: 2 x RJ-45 1GbE LAN Port (with Link Aggregation / Failover support); 2 x USB 3.2 Port Processor: Celeron J4025 Dual-Core 2.0GHz 4MB CPU, up to 2.9GHz Burst Memory: 6GB DDR4 PC4-21300 2666MHz SO-DIMMs Storage: 16TB (4 x 4TB) 6Gb/s SATA 3.5 Inch HDDs for High Capacity Storage Power: Single Power Supply Operating System: Synology DSM Software Operating System Features: Security Advisor, AES 256-bit Encryption, 2 Factor Authentication, File Server/Management, 4K Multimedia Server role, Desktop Backup, Hyper Backup, Snapshot Replication, Synology Drive, and many more NAS chassis comes in a sealed box. Hard drives and memory upgrades included separately NOT installed, installation required.