2GB KIT (2 x 1GB) For Gateway Media Center Series GT5056J GT5058J GT5062J GT5064 GT5064H GT5068E GT5220 GT5224 GT5228 GT5232E GT5232H GT5235E GT5235H GT5238E GT5242E GT5244E GT5252 GT5263E GT5268E. DIMM DDR2 NON-ECC PC2-4200 533MHz RAM Memory. Genuine A-Tech Brand. 2GB KIT (2 x 1GB) 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 Gateway Media Center Series. (See Compatibility List Below)