The SD card reader was one of the most exciting features that made a long-awaited return after six years of absence in the MacBook Pro models. However, it seems like wreaking havoc.

You can try this free software called SD Memory Card Formatter. ... (if possible), and test your SD card with a new card reader or on a different computer. That’s it! Now read: ...

Unfortunately, it seems that some users are having issues with the SD card reader on these new machines, as they have been reporting slow transfer speeds or even inaccessible files when trying to ...

The SD card reader slot on the new 14 and 16-inch MacBook Pro models is not functioning as expected with some SD cards, according to multiple reports on the MacRumors forums. Same issues with 14 ...