4GB (1x4GB) DDR2 800MHz PC2-6400 Single Stick 200-pin SODIMM Laptop Memory RAM 2Rx8 at Amazon.com
Crucial 4GB Single DDR2 667MHz (PC2-5300) CL5 SODIMM 200-Pin Notebook Memory Module CT51264AC667 at Amazon.com
4GB Stick for Dell Studio Notebook Series 1737 (8GB Max). SO-DIMM DDR2 Non-ECC PC2-5300 667MHz RAM Memory. Genuine A-Tech Brand at Amazon.com
Zopsc DDR2 4GB RAM 800MHz Memory Module for AMD CPU Stable Fast Data Transmission 240PIN for High Anti-Interference and Antistatic for Desktop Computer, Plug and Play at Amazon.com
4GB Kit (2x2GB) PC2-5300 RAM, DDR2 667MHz SODIMM 2RX8 CL5 1.8V 200pin Memory RAM for Laptop Notebook Computer at Amazon.com