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How to upgrade memory in IBM ThinkPad T40 T41 T42 – Inside my laptop
Crucial 1GB DDR-333 MHz PC2700 CL2.5 200-Pin Memory Module IBM ThinkPad T41 Series (Type 2379) System-CT347272
CMS 1GB (1X1GB) DDR1 2700 333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with IBM Lenovo® Thinkpad T41 Notebook Series Ddr1-Pc2700 - A50 at Amazon.com