3.6GHz AMD Ryzen V1780B, 8GB DDR4 ECC SODIMM RAM (2 slots, Upgradeable to 32GB, 2x 16GB Max), 8 x 3.5" or 2.5" Drive Bays (Maximum of 10 bays with Expansion), 2x M.2 2280 NVMe SSD, 3 x USB 3.2 Gen 1, 2 x eSATA Port, 2 x 1GbE LAN, 1x 10GbE LAN, 1 x PCIe Gen3 x8 slot (x8 link) for optional 10GbE or M.2 SSD adapter card, Max IP Cams - 75 (2 Free Licences). ONLY SUPPORTS SYNOLOGY DRIVES Compatible RAM Models: D4ECSO-2666-16G (DDR4 ECC SODIMM) - 16GB D4ES01-8G (DDR4 ECC SODIMM) - 8GB Expansion Unit Available - DX517 (5 Additional Bays)