Lenovo ThinkPad R40 Series Upgrades - Guaranteed Compatible Memory
Silicon Mountain Memory offers upgrades for all Lenovo ThinkPad R40 Series computer models, simply select your ThinkPad R40 Series model below to get started. Save time and money by purchasing guaranteed compatible memory for your
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Lenovo ThinkPad R40 Series Models
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Performance
Noticeably improve your system's performance or your money back
Compatibility
100% compatible memory for your system
Quality
7 levels of rigorous testing and a lifetime warranty