4GB STICK For Gateway NV Series Notebook NV55C48u NV55C49u NV55C53u NV55S02u NV55S03u NV55S04u NV55S05u NV55S15u NV55S19u NV55S22u NV55S28u. SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. 4GB STICK SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Gateway NV Series Notebook. (See Compatibility List Below)