GoKawiilM5 Mac mini drops user-replaceable SSD module found in M4 model
Apple's new M6 and M5 Pro Mac mini models have removed the removable NAND storage module that was present in the previous M4 Mac mini. That earlier module let users unscrew the back panel and swap in a third-party SSD up to 2TB, bypassing Apple's costly build-to-order storage upgrades. The new models look externally similar but no longer include this swappable storage slot.