A-Tech 4GB STICK Gateway NV NV55C34u NV55C35u NV55C38u NV55C39u NV55C44u NV55C48u NV55C49u NV55C53u NV55C54u NV55S02u NV55S03u NV55S04u NV55S05u SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory 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. (See Compatibility List Below)