This Cisco® UCSX-ML-128G4RW Compatible 128GB DDR4-3200MHz octal rank load-reduced ECC 1.2V 288-pin CL22 factory original LRDIMM is 100% guaranteed to be compatible with your system and to work right the first time. All of our server memory is built to strict JEDEC standards 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.