Synology DS1621+ 6 Bay NAS

2.2GHz AMD Ryzen V1500B, 4GB DDR4 ECC SODIMM RAM (2 slots, Upgradeable to 32GB, 2x 16GB Max), 6 x 3.5"
or 2.5" Drive Bays, 3 x USB 3.0, 2 x eSATA Port, 4 x Gigabit LAN, 1 x 4-lane PCIe x8 slot for optional 10GbE or M.2 SSD adapter card, Max IP Cams - 40 (2 Free Licences).
Compatible RAM Models:
D4ECSO-2666-16G (DDR4 ECC SODIMM) - 16GB
D4ES01-8G (DDR4 ECC SODIMM) - 8GB
D4ES01-4G (DDR4 ECC SODIMM) - 4GB
Expansion Unit Available - DX517 (5 Additional Bays)