How to upgrade RAM memory in Lenovo ThinkPad R61 laptop - YouTube
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
Lenovo Thinkpad R61 RAM-Memory (1 Gig) | Replacement Part
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LENOVO THINKPAD R61 Intel Core 2 Duo 3GB RAM 160GB HDD WIFI LINUX MINT | eBay
Lenovo Thinkpad T61 15.6" Core 2 Duo 2.10GHz 2GB RAM 160GB BLUETOOTH 1680×1050 – ASA College: Florida
2GB [1x2GB] Memory RAM Upgrade for the Lenovo ThinkPad R61, R61e, R61i Laptops | eBay
Lenovo ThinkPad T61 6465-9TU 13.4" Refurbished Laptop: Dual Core|8GB R – Upcycle Tech Foundation
T61 - Wiki
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