16GB KIT (4 x 4GB) For Dell XPS Notebook Series 17 17 (L701X) 4 Slots 17 (L702X) 3D 17 3D L702X L702X (4 Slots). SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. 16GB KIT (4 x 4GB) SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz 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)