Lenovo Thinkpad L520 15.6" Intel Core i5 2nd Gen Dual-Core 4GB RAM 320GB Windows 10 Home DVD Webcam
Arch Memory 4GB 204-Pin DDR3 1333 MHz So-dimm RAM for Lenovo ThinkPad L520 5016-32U at Amazon.com
OFFTEK 2GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad L520 (DDR3-12800) Laptop Memory at Amazon.com
Lenovo Thinkpad L520 15.6" Intel Core i5 2nd Gen Dual-Core 4GB RAM 320GB Windows 10
Lenovo Thinkpad L520 15.6" Intel Core i5 2nd Gen Dual-Core 4GB RAM 320GB Windows 10 Home DVD Webcam
CMS 16GB (2X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad L520 5016; 5017; 7859; 7860 Series - A13 at Amazon.com
Lenovo Thinkpad L520 15.6" Intel Core i5 2nd Gen Dual-Core 4GB RAM 320GB Windows 10 Home DVD Webcam
16GB KIT (2 x 8GB) for IBM Lenovo ThinkPad L Series L412 L420 L512 L520. SO-DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com