How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider
Amazon.com: OWC 2.0TB Aura Pro X2 Complete SSD Upgrade Solution with Tools & OWC Envoy Pro Enclosure Compatible with MacBook Air (Mid 2013-2017) and MacBook Pro (Retina, Late 2013 - Mid 2015) : Electronics
How to Upgrade & Replace an SSD in MacBook Air | OSXDaily