Intel Xeon E3-1200 v5/v6, Intel Core i3, or Celeron.Memory: Up to 64GB DDR4 across 4 UDIMM slots (uses ECC unbuffered memory).Storage: Up to 4 internal 3.5-inch cabled hard drives (SATA or nearline SAS).Slots & Ports: Four PCIe 3.0 slots, dual 1GbE network ports.Power Supply: Single cabled 290W power supply unit.