2GB DDR2-800 (PC2-6400) RAM Memory Upgrade for the Compaq HP Presario CQ Series CQ5600F (Genuine A-Tech Brand) 2GB DDR2-800 (PC2-6400) RAM Memory Upgrade for the Compaq HP Presario CQ Series CQ5600F 100% Genuine A-Tech Brand Memory 2GB DDR2-800 PC2-6400 Non-ECC Unbuffered 240 Pin 1.8V CL=6 Memory 128X8 Limited Lifetime Warranty High Quality Ram specifically designed for the Compaq HP Presario CQ Series CQ5600F