4GB KIT 4x 1GB For Gateway Media Center Desktop GM5410h GM5470e GM5472 GM5474 GM5478 GM5485h GM5626 GM5632e GM5638e GM5639e GM5643e GM5661e GM5664 GM5688e DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory 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 Media Center Desktop. (See Compatibility List Below)