2GB [2x1GB] DDR2-533 (PC2-4200) RAM Memory Upgrade Kit for the Compaq HP Presario SR2180NX (Genuine A-Tech Brand) 2GB [2x1GB] DDR2-533 (PC2-4200) RAM Memory Upgrade Kit for the Compaq HP Presario SR2180NX 100% Genuine A-Tech Brand Memory 1GB DDR2-533 PC2-4200 Non-ECC Unbuffered 240 Pin 1.8V CL=4 Memory 64X8 Limited Lifetime Warranty High Quality Ram specifically designed for the Compaq HP Presario SR2180NX