Dell Latitude E5420 14" Laptop Computer Intel Core i5 4GB 320GB Windows 10 Home and WIFI
CMS 4GB (1X4GB) DDR3 8500 1066MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Dell® Latitude E5420 Notebook - A32 at Amazon.com
Dell Latitude E5420 14" Laptop Computer Intel Core i5 4GB 128GB SSD Windows 10 Home and WIFI
Dell Latitude E5420 Intel Core i7-2620M CPU @ 2.70GHz, 4 GB RAM, 500 GB HDD with Microsoft Windows 10 Professional and Microsoft Office 2010 Home & Business.
OFFTEK 2GB Replacement Memory RAM Upgrade for Dell Latitude E5420 (DDR3-12800) Laptop Memory at Amazon.com
A-Tech 4GB Module for Dell Latitude E5420 Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS278187B12034X1) at Amazon.com