M1 Mac RAM and SSD Upgrades Found to Be Possible After Purchase - MacRumors
Apple MacBook Pro 14´´ M1 Pro/16GB/ 1TB SSD Silver | Techinn
Getting SSD performance data which make sense – The Eclectic Light Company
512GB version of the new MacBook Pro has a slower SSD than the Mac it replaces | Ars Technica
MacBook Air 13.3" Laptop Apple M1 chip 8GB Memory 256GB SSD Space Gray MGN63LL/A - Best Buy
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
Entry-level M2 MacBook Pro has a slower SSD - 9to5Mac