1GB STICK For Sony VAIO VGN VGN-N230E/B VGN-N230E/T VGN-N230E/W VGN-N230FH VGN-N230N/B VGN-N245FN VGN-N250E/B VGN-N250E/W VGN-N250E. SO-DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory. Genuine A-Tech Brand. 1GB STICK SO-DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Sony VAIO VGN. (See Compatibility List Below)