Amazon.com: Sintech M.2 NVMe SSD Adapter Card for Upgrade 2016 2017 13" MacBook PRO A1708 Non-Touch Bar Models(Only For Late 2016-Mid 2017 Year) : Electronics
Upgrading a 2015 MacBook Pro Retina with the 2TB OWC Aura Pro X2 SSD upgrade kit
Upgrading the new MacBook Pro is still a major pain | BGR
Apple Lowers Price of MacBook Pro's High-End SSD Upgrade Options - MacRumors