Know your gear
This industry standard 8 GB DDR3 1333 MHz dual rank registered ECC 1.35 V 240-pin CL9 factory original RDIMM is 100% guaranteed to be compatible with your system and to work right the first time. This server memory is built to strict JEDEC standards at one of the tier 1 facilities (Samsung, Micron, or Hynix). These products are also guaranteed by federal law to not affect or void OEM warranties.