AddOn IBM 40Y8404 Compatible 2GB DDR2-667MHz Unbuffered Dual Rank 1.8V 200-pin CL5 SODIMM - For Notebook - 2 GB (1 x 2GB) - DDR2-667/PC2-5300 DDR2 SDRAM - 667 MHz Dual-rank Memory - CL5 - 1.80 V - Non-ECC - Unbuffered - 200-pin - SODIMM - Lifetime Warranty

AddOn IBM 40Y8404 Compatible 2GB DDR2-667MHz Unbuffered Dual Rank 1.8V 200-pin CL5 SODIMM - For Notebook - 2 GB (1 x 2GB) - DDR2-667/PC2-5300 DDR2 SDRAM - 667 MHz Dual-rank Memory - CL5 - 1.80 V - Non-ECC - Unbuffered - 200-pin - SODIMM - Lifetime Warranty

AddOn IBM 40Y8404 Compatible 2GB DDR2-667MHz Unbuffered Dual Rank 1.8V 200-pin CL5 SODIMM - For Notebook - 2 GB (1 x 2GB) - DDR2-667/PC2-5300 DDR2 SDRAM - 667 MHz Dual-rank Memory - CL5 - 1.80 V - Non-ECC - Unbuffered - 200-pin - SODIMM - Lifetime Warranty

This IBM® 40Y8404 compatible 2GB DDR2-667MHz Dual Rank Unbuffered 1.8V 200-pin CL5 SODIMM 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.