How to Upgrade & Replace an SSD in MacBook Air | OSXDaily
Upgrade and Increase MacBook Storage - HDD, SSD
How To: Replace the SSD in your MacBook Air 13" (Early 2015) - YouTube
How to Upgrade & Replace an SSD in MacBook Air | OSXDaily
Amazon.com: MCE Technologies 256GB SSD for MacBook Air 2015 and MacBook Air 2017: PCIe-Based 4 Lane (x4) NVMe SSD Flash Storage Upgrade - Requires macOS 10.13.x (High Sierra) or Later : Electronics
How to Increase Your MacBook's Storage
M1 Mac RAM and storage can be upgraded after purchase, but it's not easy - 9to5Mac