This HP® P40007-B21 compatible 32GB DDR4-3200MHz Registered ECC Single Rank x4 1.2V 288-pin CL17 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.
