M1 Mac users report excessive SSD usage, potentially affecting the component's lifespan - 9to5Mac
M1 Mac RAM and storage can be upgraded after purchase, but it's not easy - 9to5Mac
M1 MacBook Air's SSD is twice as fast as that of the latest Intel-based model - NotebookCheck.net News
Horrible NVME SSD Write Speeds on M1 Mac … - Apple Community
M1 Mac mini ・M.2 SSDを増設する・・ - whg+blog・・
Mac Studio SSD does not work on NVMe, top-level ARM64 SSD controller in M1 Ultra makes it nearly impossible to swap-out or add raw storage modules - NotebookCheck.net News