Can we upgrade the RAM of a 13-inch MacBook Pro non-Retina to 16GB? - Quora
MacBook Pro with Retina display dismantled by iFixit, revealing soldered RAM - The Verge
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
A1398 MacBook pro Retina RAM upgrade service in Tarajan, Jorhat - iFix Guwahati
MacBook Pro (Retina, 15-inch, Mid 2012) SSD Upgrade - A Leslie Wong Blog
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
MacBook Pro 13" Retina (Mid 2018) 2.3 GHz Logic Board with Paired Touch ID Sensor