Know your gear
This Industry Standard 4GB DDR3-1600MHz single 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 , Micron , or Hynix ). Our products are also guaranteed by federal law to not affect or void OEM warranties.