Synology DiskStation DS419slim is a compact 4-Bay NAS packed with powerful hardware and offers a large variety of features like file backup, comprehensive security tools, media streaming to most TVs, and public cloud backup and sync OS Features: Cost Saving Compact Design, File Sync Across All Devices via Cloud Station Suite, File Access and Sharing via QuickConnect, Synology Hybrid RAID Technology, Desktop Backup, Comprehensive Built-In Security Tools Ports: 2 x RJ-45 1GbE LAN Port (with Link Aggregation / Failover support); 2 x USB 3.0 Port; Memory: 512MB DDR3 Synology SDRAM; HDD Storage: 8TB (4 x 2TB) 6Gb/s SATA HDD for High Capacity Storage; Processor: Marvell Armada 385 88F6820 Dual-Core 1.33GHz 1MB CPU Synology NAS chassis comes in a sealed box Hard drives and memory upgrades included separately NOT installed, installation required