4GB KIT (2 x 2GB) For Dell XPS Notebook Series M1330 M1530 M1710 (MXG061) M1730 M2010 (MXP061). 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 Dell XPS Notebook Series. (See Compatibility List Below)