Replacing, removing, upgrading RAM or memory on Dell Latitude E5520 i5 latop. - YouTube
Dell Latitude E5520 – RefurbIT
Dell Latitude 5520 I5 1135G7 ram and ssd upgrade - YouTube
A-Tech 2GB Memory RAM for Dell Latitude E5520 - DDR3L 1600MHz PC3-12800 Non ECC SO-DIMM 1Rx16 1.35V - Single Laptop & Notebook Upgrade Module ( Replacement for A7568815) at Amazon.com
Restored Dell 15.6" Latitude E5520 WA5-0902 Laptop PC with Intel Core i5-2410M Processor, 8GB Memory, 128GB Solid State Drive and Windows 10 Pro (Refurbished) - Walmart.com
OWC 4GB DDR3 1333 PC3-10600 CL9 2Rx8 204-pin 1.5V SODIMM Memory RAM Module Upgrade Compatible with Dell Latitude E5410 E5420 E5510 E5520 E6220 at Amazon.com