Synology DiskStation DS420j is made for a variety of server roles, such as home-based data backup, file syncing, and sharing.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; EXT4 File System for Advanced LUN iSCSI Service Processor: RTD1296 4-Core 1.4GHz CPU Memory: 1GB DDR4 non-ECC Memory Storage: 16TB (4 x 4TB) SATA 3.5" HDDs for High-Capacity Storage Power: Single Power Supply Operating System: Synology DSM Software Ideal for VM & container storage, lightning-fast file sharing, & an essential entry-level NAS for your home data backup.Comes with powerful storage management, file syncing, surveillance, & backup software. Suitable for editing high-quality video. Comes in a sealed box.Hard drives & memory upgrades included separately NOT installed, installation required.