Restored Dell Latitude E6420 Laptop Computer, 2.50 GHz Intel i5 Dual Core Gen 2, 16GB DDR3 RAM, 500GB Hard Disk Drive (HDD) SATA Hard Drive, Windows 10 Professional 64Bit, 14" WideScreen (Refurbished) - Walmart.com
A-Tech 8GB Kit (2x4GB) RAM for Dell Latitude E6410, E5520M, E5510, E5420M, E5410, E4310, E4300, E4200 Laptop | DDR3 1066 MHz SODIMM PC3-8500 Memory Upgrade at Amazon.com
Dell Latitude E6440 ( P38g ) RAM Upgrade | FULL Guide - YouTube