A-TECH 8GB KIT (2 x 4GB) For Dell Latitude E6420 E6420 ATG E6430 ATG E6430s E6510 E6520 XT3. SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory. Genuine Brand. 8GB KIT (2 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 Latitude. (See Compatibility List Below)