AddOn AA800D2N5/4G x1 JEDEC Standard 4GB DDR2-800MHz Unbuffered Dual Rank 1.8V 240-pin CL5 UDIMM - 100% compatible and guaranteed to work

This Industry Standard 4GB DDR2-800MHz Dual Rank Unbuffered 1.8V 240-pin CL5 UDIMM 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.