Dell 16GB PC3-12800 DDR3-1600 2Rx4 ECC Registered DIMM (Dell PN# A5940906) Compatible With Dell Part Number: A5940906 16GB PC3-12800 DDR3-1600 2Rx4 1.5v ECC Registered RDIMM For Dell Servers only. Not compatible with Dell laptops and home computers. Lifetime Warranty Third Party; 100% Compatible