A-TECH 4GB STICK For Sony VAIO VPC J112FX/B J112GX J113FX J114FX J114FX/B J115FK/B J115FX J115FX/B J116FD/B J116FX J116FX/B J118FG/B. SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory. Genuine Brand. 4GB STICK 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 Sony VAIO VPC. (See Compatibility List Below)