Samsung M470T5267AZ3-CF7 Samsung DDR2 4GB/800 SO-DIMM at Amazon.com
4GB (1x4GB) DDR2-800MHz PC2-6400 2Rx8 1.8V SODIMM Memory for Laptop, Notebook by NEMIX RAM at Amazon.com
Crucial 4GB Single DDR2 667MHz (PC2-5300) CL5 SODIMM 200-Pin Notebook Memory Module CT51264AC667 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