AddOn AM1600D3SR8VRN/4G x1 Lenovo 0C19499 Compatible Factory Original 4GB DDR3-1600MHz Registered ECC Single Rank x8 1.35V 240-pin CL11 Very Low Profile RDIMM - 100% compatible and guaranteed to work

This Lenovo® 0C19499 compatible 4GB DDR3-1600MHz single rank unbuffered ECC 1.35V 240-pin CL11 factory original very low profile 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.