Gateway Solo 1200 Series compatible 128MB 133MHz SDRAM SO-DIMM Black Diamond memory. Compatible computer model: Gateway Solo 9500ls 750, 5350cl, 9500ls deluxe 850, 9500ls 1.0G, 9550cl Deluxe, 9500XL, 955ls Deluxe, 9500cx 900, 1200 Deluxe, 9500xl 1.0G, 1450se, 9500xl deluxe 1.0G, 5350 Series, 9500XL Deluxe, 9500ls deluxe 750, 9500 Series, 5350ls, 1400b LS Pro, 9550xl, 9550cl, 9500ls deluxe 1.0G, 9500SE Deluxe, 9550xl Deluxe, 9550 Series, 9550se Deluxe, 1450 Series, 9500xl 900, 9500SE, 9500cs, 9500cl, 9550ls, 1200 Series, 1450x, 1400 Series, 9500cx 1.0G, 955ls, 9500ls 850, 9500xl deluxe 900, 9500ls deluxe 900, 9500ls 900, 9500cx 850, 9550se, 1400se, 3450 Deluxe, 1450ls. Black Diamond Memory offers the most extensive line of memory solutions today. With our decades of experience specializing in memory, Black Diamond Memory is a proven manufacturer to the semiconductor industry. Our great products combined with our world class service and support have helped us to where we are today. When you have an Black Diamond memory chip, you can count on it being the best available memory for your system. Our system specific Branded Memory line delivers in performance, and is designed to be guaranteed in compatibility with your system. Each of our memory chips come with a lifetime warranty for your peace of mind. Use our Upgrade Configurator to easily find the correct memory module for your system. Please keep in mind that this memory will ONLY work on the models listed above. 15% Restocking fee will apply for non-defective items.