4GB [2x2GB] DDR2-667 (PC2-5300) RAM Memory Upgrade Kit for the Compaq HP Presario CQ50-215NR (Genuine A-Tech Brand) 4GB [2x2GB] DDR2-667 (PC2-5300) RAM Memory Upgrade Kit for the Compaq HP Presario CQ50-215NR 100% Genuine A-Tech Brand Memory 2GB DDR2-667 PC2-5300 Non-ECC Unbuffered 200 Pin 1.8V CL=5 Memory Limited Lifetime Warranty High Quality Ram specifically designed for the Compaq HP Presario CQ50-215NR