MacBook Pro (Retina, 13-inch, Early 2015) Upgrade to NVMe M.2 SSD - YouTube
Upgrading the Internal SSD in Macbook Air 13 inch (Early 2015) | by greenteabiscuit | Medium
Amazon.com: 512GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
NVMe SSD Upgrade Guide for an Early 2015 MacBook Pro - Graham Stevens – Grh.am
MacBook Air 13" Early 2015 SSD Replacement - iFixit Repair Guide