How to Upgrade MacBook Pro SSD Storage (Touch Bar, 2016-2020): EveryMac.com
OWC teardown finds removable SSD in entry-level 13" MacBook Pro without Touch Bar - 9to5Mac
Amazon.com: INDMEM NVMe PCle SSD 512GB 3D TLC Flash Hard Drive with Tools for Upgrade 2016 2017 13" MacBook PRO A1708(EMC 2978/3164 Non-Touch Bar Models(Late 2016-Mid 2017 Year) : Electronics
How to Upgrade & Replace an SSD in MacBook Air | OSXDaily
New 15-inch MacBook Pro appears to offer fastest SSD performance on the market - 9to5Mac