Full Details on Amazon.com : http://www.amazon.com/gp/product/B00198UCUK?tag=tsukuyomi-20<br /><br />1GB Memory Upgrade 4 IBM ThinkPad X40 2369 X40 2370 X40 2371-xxx X40 2372 X40 Series (Type<br /><br />Technology DDR SDRAM <br />Pin Count 200-Pin DDR SDRAM <br />Density 1GB 16 CHIP <br />Speed 333MHz PC2700 <br />CL CL 25
