A-TECH 512MB STICK Toshiba Satellite A Series A50-S535B/A50-S535G A50-S536B/A50-S536G A50-S537B/A50-S537G A50-SP306 A55 A55-S106 A55-S1063 SO-DIMM DDR NON-ECC PC2700 333MHz RAM Memory Genuine Brand 512MB 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 Satellite A Series. (See Compatibility List Below)