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 - 7735-CA2 | LapStore.de
Lenovo ThinkPad T61 (8890) - full specs, details and review
LENOVO THINKPAD R61 Intel Core 2 Duo 2.00GHz 3GB RAM 80GB HDD Bluetooth 1440x900 | eBay
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