IBM Lenovo Thinkpad T400, T61 Laptop 1.8 GHz 4 GB Ram Windows XP pro SP3 WiFi – ASA College: Florida
Lenovo Thinkpad T61 15.6" Core 2 Duo 2.10GHz 2GB RAM 160GB BLUETOOTH 1680x1050 | eBay
IBM Lenovo Thinkpad T400, T61 Laptop 1.8 GHz 4 GB Ram Windows XP pro SP3 WiFi – ASA College: Florida
Tutorial: How to upgrade ram in a T61 Thinkpad - YouTube
My upgraded T61 Thinkpad : r/thinkpad
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) at Amazon.com
RAM memory for Lenovo ThinkPad T61p
IBM Lenovo ThinkPad T61 15.4" (2.20GHz Core 2 Duo, 4GB Ram, 320GB HDD) Linux