![OFFTEK 512MB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R40 (2722-xxx) (PC2100) Laptop Memory at Amazon.com OFFTEK 512MB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R40 (2722-xxx) (PC2100) Laptop Memory at Amazon.com](https://m.media-amazon.com/images/I/61TyY09oM2L.jpg)
OFFTEK 512MB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R40 (2722-xxx) (PC2100) Laptop Memory at Amazon.com
![Mainboard - Bottom Casing FRU P/N: 13N5001 IBM Thinkpad R40 2897-23U MainBoard - Bottom Casing. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation Mainboard - Bottom Casing FRU P/N: 13N5001 IBM Thinkpad R40 2897-23U MainBoard - Bottom Casing. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation](https://www.pchub.com/images/thumbs/0070004_IBM-Thinkpad-R40-2897-23U-MainBoard-Bottom-Casing-FRU-P-N-13N5001-b-70004_550.jpeg)
Mainboard - Bottom Casing FRU P/N: 13N5001 IBM Thinkpad R40 2897-23U MainBoard - Bottom Casing. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation
![1GB RAM Memory for IBM ThinkPad R40 2724 Black Diamond Memory Module DDR SO-DIMM 200pin PC2100 266MHz Upgrade - Newegg.com 1GB RAM Memory for IBM ThinkPad R40 2724 Black Diamond Memory Module DDR SO-DIMM 200pin PC2100 266MHz Upgrade - Newegg.com](https://c1.neweggimages.com/ProductImage/ABYY_1_20180524270484324.jpg)
1GB RAM Memory for IBM ThinkPad R40 2724 Black Diamond Memory Module DDR SO-DIMM 200pin PC2100 266MHz Upgrade - Newegg.com
![Amazon.com: BRST AC Adapter for IBM ThinkPad R40 T21 T41 T42 T43 Laptop Charger Power Supply Cord : Electronics Amazon.com: BRST AC Adapter for IBM ThinkPad R40 T21 T41 T42 T43 Laptop Charger Power Supply Cord : Electronics](https://m.media-amazon.com/images/I/51jMkEizBzL._AC_SY580_.jpg)