IBM Compatible 16GB PC4-17000 DDR4-2133MHz 2Rx4 1.2v ECC Registered RDIMM (IBM PN# 46W0798) Compatible With IBM Part Number: 46W0798 16GB PC4-17000 DDR4-2133MHz 2Rx4 1.2v ECC Registered RDIMM For IBM Servers only. Not compatible with IBM laptops and home computers. Lifetime Warranty Third Party; 100% Compatible