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
OFFTEK 4GB Replacement Memory RAM Upgrade for Dell Latitude E5520 (DDR3-12800) Laptop Memory at Amazon.com
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
Memory RAM Upgrade for Dell Latitude E5520 4GB DDR3 SODIMM | eBay
Restored Dell 15.6" Latitude E5520 WA5-0903 Laptop PC with Intel Core i5-2410M Processor, 8GB Memory, 500GB Hard 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