1GB STICK For Toshiba Toshiba Satellite M35-S4562 M35-SP350 M35-SP3501 M35X M35X-S109 M35X-S1091 M35X-S111 M35X-S114 M35X-S1141 M35X-S1142 M35X-S1143 M35X-S149 M35X-S1491 M35X-S1492 M35X-S161 M35X-S1611 M35X-S163 M35X-S1631 M35X-S309 M35X-S3091 M35X-S311 M35X-S3111 M35X-S3112 M35X-S329 M35X-S3291 M35X-S349 M35X-S3491 M35X-SP1091 M35X-SP111 M35X-SP161 M35X-SP171 M35X-SP181 M35X-SP311. SO-DIMM DDR NON-ECC PC2700 333MHz RAM Memory. Genuine A-Tech Brand. 1GB STICK SO-DIMM DDR NON-ECC PC2700 333MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Toshiba Toshiba Satellite. (See Compatibility List Below)