2GB DDR3-1066 (PC3-8500) RAM Memory Upgrade for the IBM ThinkPad X201s (3249ERU) (Genuine A-Tech Brand) 2GB DDR3-1066 (PC3-8500) RAM Memory Upgrade for the IBM ThinkPad X201s (3249ERU) 100% Genuine A-Tech Brand Memory 2GB DDR3-1066 PC3-8500 Non-ECC Unbuffered 204 Pin 1.5V CL=7 Memory Limited Lifetime Warranty High Quality Ram specifically designed for the IBM ThinkPad X201s (3249ERU)