Logic Board for 13" MacBook Pro A1502 Early 2015 i7 3.1GHz 16GB RAM 820-4924-A | eBay
MacBook Pro 13" Retina Display Late 2013 Teardown - iFixit
Is there a way to upgrade the RAM in an early 2015 MacBook Pro without voiding the warranty? - Quora
8GB RAM Memory for Apple MacBook Pro A1502 Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade System Specific Memory - Newegg.ca
Memory RAM Upgrades for MacBook Pro (2012 - Late 2016)
Amazon | 8GB 2X4GB RAM Memory for Apple MacBook Pro A1502 Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-8500 1066MHz Upgrade | Black Diamond Memory | パソコン・周辺機器 通販
Can I upgrade the RAM of the MacBook Pro 13' Retina from 8gb to 16gb after/during purchase? - Quora