Synology DiskStation DS620slim, made for a variety of server roles such as backup, file storage, email servers, and domain controllers Ports: 2 x RJ-45 1GbE LAN Port (with Link Aggregation / Failover support); 2 x USB 3.0 Port; Btrf File System for Advanced LUN iSCSI Service; Processor: Intel Celeron J3355 Dual-Core 2.0GHz 2MB CPU, Up To 2.5GHz Turbo; Memory: 6GB DDR3L Synology SDRAM Memory Memory Storage: 24TB (6 x 4TB) 6Gb/s SATA 2.5' HDDs for High Capacity Storage; Operating System: Synology DSM Software Synology NAS chassis comes in a sealed box Hard drives and memory upgrades included separately NOT installed, installation required