AddOn Networks AM1066D3DR8EN/4G memory module 4 GB 1 x 4 GB DDR3 1066 MHz ECC

This Industry Standard 4GB DDR3-1066MHz dual rank ECC 1.5V 240-pin CL7 factory original UDIMM 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.