Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro(Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com
A-Tech 8GB Kit (2x4GB) RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
15" MacBook Pro Retina A1398 - Logic Board Mid 2014
15 inch Apple MacBook Pro Retina A1398 Logic Board 2.8Ghz i7 16Gb Ram Mid 2014 - TEKDEP.com Parts Tools Gadgets Repair
Macbook Pro 13" Retina A1502 Take Apart (2014 Model) - YouTube