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
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CMS 8GB (2X4GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad L412, L420, L512, L520 Ddr3-1333 - A29 at Amazon.com
Arch Memory 4GB 204-Pin DDR3 1333 MHz So-dimm RAM for Lenovo ThinkPad L520 5016-32U at Amazon.com
Lenovo ThinkPad L520 -15.6" Intel core i5-2.30GHz 4GB 240GB SSD - Windows 10 Pro Scratch and Dent Special-Used with FREE 3 Year Warranty provided by CPS. - Walmart.com
Lenovo Thinkpad L520 15.6" Intel Core i5 2nd Gen Dual-Core 4GB RAM 320GB Windows 10 Home DVD Webcam
Lenovo ThinkPad L520 (7859) - full specs, details and review