A-Tech 16GB Kit (2x8GB) RAM for Dell Latitude E7440, E7240, E6540, E6440, E5540, E5440 Laptop | DDR3/DDR3L 1600 MHz SODIMM PC3L-12800 Memory Upgrade at Amazon.com
Restored Dell Latitude E5440 14" Laptop, Windows 10 Pro, Intel Core i5-4300U Processor, 8GB RAM, 500GB Hard Drive, Black (Refurbished) - Walmart.com
Dell Latitude E5440 Laptop Computer, 2.0 GHz Intel i5 Dual Core Gen 4, 4GB DDR3 RAM, 500GB Hard Disk Drive (HDD) SATA Hard Drive, Windows 10 Home 64Bit, 14" Screen (Used) - Walmart.com