Some SD cards not working with 2021 MacBook Pro, users report
Owners of both the new 14-inch MacBook Pro and 16-inch MacBook Pro have uncovered issues with the ability to mount and utilize some SD cards.
Some users report that the device can access the SD cards, but the transfer speeds seem unusually slow. Other users state that even the ability to mound the cards is inconsistent, and not even traceable across manufacturers or models.Users on the MacRumors' forums have begun chronicling the issue. MacRumors users note that there doesn't seem to be an underlying reason why a card does or does not work.
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