2GB STICK For Gateway NV Notebook NV40 NV44 NV4402u NV48 NV52 NV5209E-ES NV5210E-ES NV5213u NV5214u NV5215u NV5216u NV53 NV5331u NV5337u NV5376u NV5378u SO-DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory 2GB STICK SO-DIMM DDR2 NON-ECC PC2-6400 800MHz 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)