2GB (2X1GB) RAM Memory 4 IBM Lenovo ThinkPad R51 Notebook Series DDR1-PC2700 A49 | eBay
OFFTEK 512MB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R51 (1829-xxx) (PC2700) Laptop Memory at Amazon.com
IBM Thinkpad R51: RAM Upgrade - YouTube
4X 512MB RAM Memory 4 IBM Lenovo ThinkPad R51 Notebook Series DDR1-PC2700 A49 | eBay
4X 512MB RAM Memory 4 IBM Lenovo ThinkPad R51 Notebook Series DDR1-PC2700 A49 | eBay
New models of the ThinkPad R51e notebook -- Ideal for small and medium business
I found this old beauty today..! IBM ThinkPad R51. Now i only need to find a appropriate charger.. : r/thinkpad
Upgrading to a Faster Hard Drive in a ThinkPad R51 - YouTube
Memory Upgrade Fun with the ThinkPAd R51 - YouTube
OFFTEK 128MB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R51 (1829-xxx) (PC2700) Laptop Memory at Amazon.com
512MB RAM Memory for IBM ThinkPad R51 Series (Type 1829) Black Diamond Memory Module DDR SO-DIMM 200pin PC2700 333MHz Upgrade System Specific Memory - Newegg.com
4X 512MB RAM Memory 4 IBM Lenovo ThinkPad R51 Notebook Series DDR1-PC2700 A49 | eBay
parts-quick 2GB (2x1GB) Compatible Memory for IBM ThinkPad R51 1830-xxx PC2700 333MHz SO-DIMM Notebook RAM Brand at Amazon.com
OFFTEK 128MB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R51 (1829-xxx) (PC2700) Laptop Memory at Amazon.com
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
256MB RAM Memory for IBM ThinkPad R51 Series (Type 2888) Black Diamond Memory Module DDR SO-DIMM 200pin PC2700 333MHz Upgrade System Specific Memory - Newegg.com