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2GB Memory Upgrade for HP Compaq Business Notebook NX7300, NX7400 DDR2 PC2-5300 667MHz 200 pin SODIMM RAM (PARTS-QUICK Brand) at Amazon.com
4GB 2X2GB RAM Memory for Compaq HP Business Notebooks Business Notebook 6710b Black Diamond Memory Module DDR2 SO-DIMM 200pin PC2-5300 667MHz Upgrade - Walmart.com
Review HP Compaq nx7400 Notebook - NotebookCheck.net Reviews