8GB KIT (2 x 4GB) For Dell Latitude 5420 5520 E4300 E4310 E5410 E5420 E5420m E5510 E5520 E5520m E6220 E6320 E6410 E6410 ATG. SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand. 8GB KIT (2 x 4GB) SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Latitude. (See Compatibility List Below)