512MB RAM Memory for IBM ThinkPad R32 2658-BMU Black Diamond Memory Module DDR SO-DIMM 200pin PC2100 266MHz Upgrade System Specific Memory - Newegg.com
IBM Thinkpad T43 Refurbished Laptop Pentium M 4GB RAM 250GB HDD
IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide
How to upgrade memory in IBM ThinkPad T40 T41 T42 – Inside my laptop
IBM Thinkpad X30 Pentium M 1.2 GHz 512MB RAM 40GB HDD WINDOWS XP PRO | eBay