CMS 4GB (1X4GB) DDR2 6400 800MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with HP/Compaq® G Notebook G56-129Wm - A42 - Walmart.com
4GB 2X2GB RAM Memory for Compaq HP Business Notebooks Business Notebook 6730b Black Diamond Memory Module DDR2 SO-DIMM 200pin PC2-6400 800MHz Upgrade - Walmart.com