Amazon.com: MCE Technologies 1TB SSD Compatible with MacBook Air 2015 and Compatible with MacBook Air 2017: PCIe-Based 4 Lane (x4) NVMe SSD Flash Storage Upgrade - Requires macOS 10.13.x (High Sierra) or
Hands on: The 2019 MacBook Air is a bargain, but SSD speeds fall | AppleInsider
How To: Replace the SSD in your MacBook Air 13" (Early 2015) - YouTube
How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider