This Lenovo 41U2978 compatible 2GB 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.

• DIMM 2 GB memory smoothly executes complex apps and games
• DDR2 SDRAM operates at up to 400 MHz data bus speed with minimal power consumption and as a result, you get optimal computer performance with an improved memory heat dissipation
• 800 MHz of memory speed with Unbuffered signal makes your computer perform like an athlete