Can I upgrade the RAM of the MacBook Pro 13' Retina from 8gb to 16gb after/during purchase? - Quora
SSD Upgrades for 2013, 2014, and 2015 MacBook Pro
How To: Replace the SSD in your MacBook Air 13" (Early 2015) - YouTube
MacBook Pro: How to remove or install memory - Apple Support
Apple MacBook Pro Retina 13 (Early 2015) Notebook Review - NotebookCheck.net Reviews
Apple MacBook Pro with Retina Display (13-inch, 2015) review: Apple's 2015 MacBook Pro is still around for those who want fewer dongles - CNET
MacBook Pro 13" Retina 2.7GHz Logic Board, 8GB, Early 2015 - 661-02354
Apple MacBook (12-inch, 2015) review: A minimalist MacBook that proves less can be more - CNET
MacBook Pro 13" Retina Display Early 2015 Repair - iFixit
Upgrading Ram in a Macbook Pro 13" | How to Upgrade Ram on 13" Macbook Pro - YouTube
How to Upgrade the PCIe SSD in an 11-inch MacBook Air (Mid 2013 – Early 2015) on Vimeo
Apple MacBook Pro 13 inch 2015-2017 RETINA - 2.7GHZ i5 - 16GB RAM - 1TB SSD | eBay
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
13-inch MacBook Air (early 2015) review | Macworld
i7 3.1 GHz 16GB RAM Logic Board 820-4924-A for MacBook Pro Retina 13" A1502 2015 | eBay