Amazon.com: M.2 NVME SSD Convert Adapter Card for Upgrade MacBook Air ( 2013-2017 ) : Electronics
MacBook Air 13" Early 2015 SSD Replacement - iFixit Repair Guide
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
Want to Replace the SSD in your MacBook Pro with Touch Bar? Think Again • iPhone in Canada Blog
Upgrading the new MacBook Pro is still a major pain
Mac Studio Teardown Indicates That SSD Storage May Be Upgradeable - MacRumors