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1GB [1x1GB] Memory RAM Upgrade for the Lenovo ThinkPad R61i, T61, T61p Laptops | 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