Apple Logic Board for MacBook Pro 13-inch Retina Early 2015 (A1502) Core i7 3.1GHz, 16GB RAM (661-02354) - Apple Force
Apple Logic Board for MacBook Pro 13-inch Retina Early 2015 (A1502) Core i7 3.1GHz, 8GB RAM (661-02358) - Apple Force
Macbook Pro A1502 Disassembly Guide - SellBroke.com
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
Is there a way to upgrade the RAM in an early 2015 MacBook Pro without voiding the warranty? - Quora
macbook pro - Can I upgrade RAM on late 2013 retina Mac Book Pro? - Ask Different
i7 3.1 GHz 16GB RAM Logic Board 820-4924-A for MacBook Pro Retina 13" A1502 2015 | eBay