This Crucial速 CT8G3ERSLD8160B Compatible 8GB DDR3-1600MHz dual rank registered ECC 1.5V 240-pin CL11 factory original 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 strict JEDEC standards at one of the tier 1 facilities (Samsung速, Micron速, or Hynix速). Our products are also guaranteed by federal law to not affect or void OEM warranties.