Can the storage (SSD) be upgraded?

Yes, but with limitations. The SSD uses a proprietary Apple connector, not standard M.2. It can be replaced with a compatible third-party SSD or an adapter-based M.2 NVMe drive, but the original drive is soldered to the logic board in some configurations—check your specific model. The interface is PCIe 3.0 x4 NVMe.

Report 011931. Filed.