QNAP TS-853BU-RP-4G 8-Bay 2U Rackmount NAS Enclosure - Intel Celeron J3455 Processor (2M Cache, 1.50 GHz, up to 2.3 GHz, 4 cores), 4GB DDR4 RAM (2 x 2GB, no slots free, 8GB Max), 4GB Flash Memory, Drive Interface: 8 x 3.5-inch/2.5-inch SATA 6Gbps/3Gbps Hard Drives Bays, Up to 128TB Max, Connectivity: 4 x USB 3.0, 4 x Gigabit RJ-45 Ethernet Ports, 1 x HDMI 1.4b, 1 x PCIe Gen 2 x2, 2 x 250W Redundant Power Supplies