Memory Upgrade Fun with the ThinkPAd R51 - YouTube
256MB RAM Memory for IBM ThinkPad R51 Series (Type 2888) Black Diamond Memory Module DDR SO-DIMM 200pin PC2700 333MHz Upgrade - Newegg.com
1GB RAM Memory for Lenovo ThinkPad X32 2672 Black Diamond Memory Module DDR SO-DIMM 200pin PC2700 333MHz Upgrade - Newegg.com
parts-quick 2GB (2x1GB) Compatible Memory for IBM ThinkPad R51 1830-xxx PC2700 333MHz SO-DIMM Notebook RAM Brand at Amazon.com
IBM R52 Thinkpad: How to Remove and Upgrade RAM Memory Module - YouTube
linux - Started this machine for the first time after 18 years!! IBM R51 (32 bit single core Pentium M), 1gb RAM, 40gb old mec - devRant
Upgrading to a Faster Hard Drive in a ThinkPad R51 - YouTube
CMS 2GB (2X1GB) DDR1 2700 333MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with Ibm Lenovo® Thinkpad R51 Notebook Series - A49 - Newegg.com
IBM Thinkpad R51: RAM Upgrade - YouTube
parts-quick 1GB Memory for IBM ThinkPad R51 Pentium M 2883, 2887, 2888, 2889-xxx DDR PC2700 200 pin 333MHz SO-DIMM Laptop RAM Upgrade at Amazon.com
Old but good: IBM ThinkPad R51 - YouTube
OFFTEK 512MB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R51 (1829-xxx) (PC2700) Laptop Memory at Amazon.com
Found this one sitting in a recycling bin with its charger. Thinkpad R51. : r/thinkpad
R51 used at work. Memory was increased to the max and the slow hard drive replaced with a SSD. I use it every day to connect to our Tivoli Storage Manager backup
2GB (1x2GB) MEMORY RAM 4 IBM Lenovo ThinkPad X60 Series Notebook DDR2 A38 | eBay