OFFTEK 1GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R51 (1840-xxx) (PC2700) Laptop Memory at Amazon.com
Win XP Pro 1GB RAM 40GB | Ibm ThinkPad R51 15" Pentium M Laptop
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
I found this old beauty today..! IBM ThinkPad R51. Now i only need to find a appropriate charger.. : r/thinkpad
1GB RAM Memory for IBM ThinkPad R51 1833 MemoryMasters Memory Module DDR SO-DIMM 200pin PC2700 333MHz Upgrade at Amazon.com
IBM Thinkpad R51 Type 2889 14" Intel Pentium M 1.70GHz 512 MB RAM 40GB HDD | eBay
Old but good: IBM ThinkPad R51 - YouTube
parts-quick 2GB (2x1GB) Compatible Memory for IBM ThinkPad R51 1830-xxx PC2700 333MHz SO-DIMM Notebook RAM Brand at Amazon.com
Memory Upgrade Fun with the ThinkPAd R51 - YouTube
parts-quick 1GB Memory for IBM ThinkPad R51 Pentium M 1829, 1830, 1831-xxx DDR PC2700 200 pin 333MHz SO-DIMM Laptop RAM Upgrade at Amazon.com
Lenovo IBM ThinkPad R51 No Ram/HDD/Batt/PS For Parts Only | eBay
IBM R51 – SGWoot.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
IBM Thinkpad R51 Type 2889 14" Intel Pentium M 1.70GHz 512 MB RAM 40GB HDD | eBay
R51 beeps without RAM but does nothing with RAM : r/thinkpad