2GB STICK For HP Compaq G61 Series G61-453EE G61-454EE G61-465SL G61-511WM G61-631NR G61-632NR G61 G61-100EA G61-100SA G61-101TU. SO-DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. 2GB STICK 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 HP Compaq G61 Series. (See Compatibility List Below)