Qnap TS-431XEU-2G 4-Bay short-depth rackmount NAS Enclosure - AnnapurnaLabs Alpine AL314 32-bit ARM Cortex-A15 quad-core 1.7GHz processor, 2 GB SODIMM DDR3 RAM (1 x 2GB, 1 x slots free, 8GB Max), 512MB Flash Memory, Drive Interface: 4 x 3.5-inch 6Gb/s, 3Gb/s SATA Hard Drives Bays, Hot-swappable, hardware encryption, Container Station, Surveillance Station: free 2, max 30. Without Rail Kit (RAIL-B02), Connectivity: 4 x USB 3.2 Gen, 1x 10GbE SFP+ LAN, 2x GbE LAN, 1U Rackmount, 100W single power supply