Proline - DDR2 - module - 4 GB - FB-DIMM 240-pin - 667 MHz / PC2-5300 - fully buffered

This Industry Standard 4GB DDR2-667MHz dual rank fully buffered ECC 1.8V 240-pin CL5 factory original FBDIMM 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.