Great Deals from Amazon.com : https://www.amazon.com/gp/product/B0049QUXFS?tag=chriskressera-20
1GB Upgrade for a Dell Inspiron 1521 System DDR2 PC26400 NONECC
Product Description :
200-pin SODIMM
DDR2-800
DDR2 PC2-6400 Unbuffered NON-ECC DDR2-800 18V 128Meg x 64
The only brand of memory upgrade available directly from a DRAM manufacturer tested to meet the most stringent industry specifications
Install it yourself in about 15 minutes The same top-quality memory that the worlds largest computer manufacturers install in the systems they sell