Proline - DDR - module - 512 MB - DIMM 184-pin - 266 MHz / PC2100 - unbuffered

This Cisco MEM2821-512D= compatible 512MB DDR-333MHz dual rank ECC 2.5V 184-pin CL2.5 factory original DRAM 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.