16-Bay NAS, Intel® Atom® C5125 8-core/8-thread 2.8GHz processor, 8 GB UDIMM DDR4 non-ECC (1 x 8GB), 4 x UDIMM DDR4 slots with ECC supported, 16 x 2.5"/3.5" SATA HDD/SSD bays + 4 x 2.5" SATA SSD bays, 2 x M.2 2280 PCIe Gen3 x2 slots, 2 x 2.5GbE (RJ-45), 4 x USB 3.2 Gen1 ports (5Gbps), 3 x PCIe Gen3 x4 slots, 550W PSU