A-TECH 4GB KIT (4 x 1GB) For Gateway GT Series Desktop GT5432 GT5435E GT5436E GT5438 GT5448E GT5449E GT5453E GT5453H GT5456H. DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory. Genuine Brand. 4GB KIT (4 x 1GB) DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Gateway GT Series Desktop. (See Compatibility List Below)