Crucial Technology 16GB DDR3-1866 / PC3 14900 RDIMM ECC Server Memory RAM (CT16G3ERSDD4186D) Capacity: 16 GB Memory Type: DDR3 SDRAM - DIMM 240-pin Upgrade Type: Generic Form Factor: RDIMM Total Capacity: 16GB Specs: DDR3 PC3-14900, CL=13, Dual Ranked DDR3-1866 1.5V, CL=13, ECC Registered Warranty: Limited Lifetime