4GB KIT (2 x 2GB) For EMachines E Notebook Series E430 E525 (DDR2) E625 E627 E720 E720-4691 E725 (DDR2). SO-DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. 4GB KIT (2 x 2GB) SO-DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For EMachines E Notebook Series. (See Compatibility List Below)