RackController 1U Rack Mount Quad Core (Synology RC18015xs+) - Intel Xeon E3-1230 v2 Processor (3.3GHz, 4 cores),8 GB DDR3 ECC UDIMM (2 x 8GB, 4 slots free, 32GB Max), 200 TB, up to 180-bay, No Optical Drive, 4 x GbE LAN, Redundant Power, Connectivity: 2 x USB3.0, 1 x Expansion Port, 150W Power Supply, No Operating System, 1U Rackmountable