4GB KIT (2 x 2GB) For Toshiba Toshiba Satellite A110-352 A110-370 A110-381 A130-ST1312 A135-S2246 A135-S2326 A135-S4407 A135-S4417 A135-S4427 A135-S4437 A135-S4447 A135-S4457 A135-S4467 A135-S4477 A135-S4487 A135-S4488 A135-S4499 A135-S4517 A135-S4527 A135-SP4016 A135-SP4048 A135-SP4058 A135-SP4088 A135-SP4108 A135-SP4146 A200-A510 A200-ST2041 A205-SP4038 A215-S4697 A215-S4717 A215-S4737. SO-DIMM DDR2 NON-ECC PC2-4200 533MHz RAM Memory. Genuine A-Tech Brand. 4GB KIT (2 x 2GB) SO-DIMM DDR2 NON-ECC PC2-4200 533MHz 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)