Dell 16GB PC3-10600 DDR3-1333 2Rx4 1.5v ECC Registered RDIMM (Dell PN# A6996789) Compatible With Dell Part Number: A6996789 16GB PC3-10600 DDR3-1333 2Rx4 1.35v ECC Registered RDIMM For Dell Servers only. Not compatible with Dell laptops and home computers. Lifetime Warranty Third Party; 100% Compatible