Synology DiskStation DS1821+, Tower, 8-Bay 3.5'' SATA HDD/SSD, 2 x M.2 2280 NVMe SSD, CPU AMD Ryzen Quad-core 2.2 GHz, 4 GB DDR4 ECC SODIMM, 4 x RJ-45 1GbE LAN, 4 x USB 3.2 Gen 1, 2 x eSATA (expandable to 15 with 2x DX517), 1 x PCIe Gen3 x8, 6kg,3y w