AddOn 512MB Cisco MEM2821-512D= Compatible DRAM - DDR - 512 MB

This Cisco MEM2821-512D= compatible 512MB factory original DRAM is 100% guaranteed to be compatible with your system and to work right the first time. Adding additional memory is the best way to increase the performance of your system. All our memory is built to strict JEDEC standards to meet or exceed the Tier 1 OEM's factory requirements. Our products are also guaranteed by federal law to not affect or void OEM warranties.