8GB KIT (2 x 4GB) For Gateway NV Series NV55S04u NV55S05u NV55S09u NV55S13u NV55S15u NV55S17u NV55S19u NV55S22u NV55S28u NV57H NV57H13h NV57H13u NV57H14M NV57H16M NV57H20a NV57H20u NV57H22u NV57H26u NV57H28M NV57H31M NV57H34M NV57H36M NV57H38M NV57H39M NV57H43u NV57H44u NV57H45u NV57H46u NV57H48u NV57H50u NV57H54u NV57H73u NV57H77u NV59 NV5905H NV5911u NV5913u NV5915a NV5915u. SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand. 8GB KIT (2 x 4GB) SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz 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)