This product is either discontinued or we cannot get that from suppliers.
Synology RackStation RS2418RP+ 12-Bay Scalable Diskless NAS, Intel Atom C3538 Quad-Core 2.1GHz CPU, 4GB DDR4 (Exandable up to 64GB), Supports 12x 3.5"/2.5" Hot Swappable SATA HDD/SSD, 168TB , 2x USB 3.0 Ports, 1x Expansion Port, 4x RJ45 Gigabit LAN, Dual 500W PSU for Redundancy.
RS2418+/RS2418RP+ is an ideal storage solution for small- and medium-sized businesses with great flexibility in terms of expandable storage capacity, upgradable memory, and optional high-speed NIC or M.2 SSD cache support.