4GB KIT 2x 2GB Sony VAIO VGN VGN-CR353/N VGN-CR353/P VGN-CR353/Q VGN-CR353/R VGN-CR353/S VGN-CR353/T VGN-CR353/W VGN-CR357 VGN-CR35GB SODIMM DDR2 NONECC PC2-5300 667MHz RAM Memory Genuine A-Tech Brand 4GB KIT (2 x 2GB) 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)