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2GB RAM Memory for Lenovo ThinkPad R61 7650 Black Diamond Memory Module DDR2 SO-DIMM 200pin PC2-5300 667MHz Upgrade System Specific Memory - Newegg.com
IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide
OFFTEK 2GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R61 (8933-xxx) (DDR2-5300) Laptop Memory at Amazon.com
IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide
2GB Memory RAM Upgrade for the Lenovo Thinkpad R61 Series T60 Series T61 Series X60 Series and X61 Series Laptops (DDR2-667 PC2-5300 SODIMM) - Walmart.com
How to replace fan in Lenovo ThinkPad T61 – Inside my laptop
2GB 2X1GB Memory RAM for Lenovo ThinkPad R61 Series DDR2 SO-DIMM 200pin PC2-5300 667MHz Black Diamond Memory Module Upgrade System Specific Memory - Newegg.com
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How to replace fan in Lenovo ThinkPad T61 – Inside my laptop