8GB [2x4GB] DDR3-1066 (PC3-8500) RAM Memory Upgrade Kit for the Acer Aspire 5551-2805 (Genuine A-Tech Brand) 8GB [2x4GB] DDR3-1066 (PC3-8500) RAM Memory Upgrade Kit for the Acer Aspire 5551-2805 100% Genuine A-Tech Brand Memory 4GB DDR3-1066 PC3-8500 Non-ECC Unbuffered 204 Pin 1.5V CL=7 Memory Limited Lifetime Warranty High Quality Ram specifically designed for the Acer Aspire 5551-2805