OFFTEK 2GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad X61 (7762-xxx) (DDR2-5300) Laptop Memory at Amazon.com
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
Upgrading the CPU in ThinkPad X61 — Wenting's Web Page
Lenovo ThinkPad X61 767593Y 12.1" Notebook - Intel - Core 2 Duo T7500 2.2GHz - Black - 2N54790 - Shoplet.com
RAM memory for Lenovo ThinkPad X61
My new beast : thinkpad X61S 3GB ram : r/thinkpad
X61 upgrade & Middleton BIOS - Thinkpads Forum
X61, still a great writing/ second machine after all these years : r/ thinkpad
4GB 2X2GB Memory RAM for Lenovo ThinkPad X Series X61 (7674ES7) 200pin 667MHz PC2-5300 DDR2 SO-DIMM Black Diamond Memory Module Upgrade System Specific Memory - Newegg.com
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
A-Tech 8GB (2 x 4GB) RAM for Lenovo THINKPAD THINKPAD X61S | DDR2 800MHz SODIMM PC2-6400 200-Pin Non-ECC Memory Upgrade Kit at Amazon.com
2GB (1x2GB) MEMORY RAM 4 IBM Lenovo ThinkPad X61s Series Notebook DDR2 A38 A38 | eBay