4GB Memory STICK For Asus F1 Series F1A55 F1A55-M F1A55-M LE F1A55-M LX F1A55-M LX Plus F1A55-V F1A55-V Plus F1A75 F1A75-I F1A75-I Deluxe F1A75-M F1A75- Netcna®Memory from USA Lifetime Warranty