IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide
RAM memory for Lenovo ThinkPad T61p
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Lenovo ThinkPad T61
4GB 2X2GB Memory RAM for Lenovo ThinkPad T Series T61 ( Type 7665 ) 200pin 667MHz PC2-5300 DDR2 SO-DIMM Black Diamond Memory Module Upgrade System Specific Memory - Newegg.com
T61 - Wiki
Cream of the Crop? The ThinkPad T61p Upgrade
8GB 2X4GB Compatible Memory for Lenovo Thinkpad T61 T61p DDR2 PC2-5300 SODIMM RAM (PARTS-QUICK Brand) 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