This Lenovo® 4ZC7A15113-AM Compatible 128GB DDR4-2933MHz Registered ECC Quad Rank x4 1.2V 288-pin CL17 TSV-RDIMM is 100% guaranteed to be compatible with your system and to work right the first time. All of our server memory is built to stricts at one of the tier 1 facilities (Samsung, Micron, or Hynix). Our products are also guaranteed by federal law to not affect or void OEM warranties.