How to install an SSD on a 15-inch Retina MacBook Pro
Amazon.com: MCE Technologies 1TB Internal SSD Flash Upgrade for MacBook Pro Retina (Mid 2012 - Early 2013) - Includes USB 3.0 Enclosure for Original Drive & Install Kit! : Electronics
How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider
How to Upgrade the SSD on a MacBook Pro Retina Early/Mid/Late 2013/2014/2015 - Replacement Tutorial - YouTube
MacBook Pro 15” Retina A1398: How to Upgrade SSD or Replace Faulty One - YouTube