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I maintain a lab of 19 iMac 27" computers (18,3 2017 models) running macOS 12.5 (having been updated over the years). The SD card readers on over half of them have stopped working. I have not found any solutions yet, and it seems wrong that these simple devices should malfunction this way.
Web search reveals this to be a fairly common problem.
Does Apple have any recommendations?
Finally found a ridiculously simple solution elsewhere in Apple forum. Thank you John Galt!
Reset the SMC (System Management Controller). Guess how? Shut down and pull the power plug out for a minute. Replace and power back on. Voila, they all work again.
Finally found a ridiculously simple solution elsewhere in Apple forum. Thank you John Galt!
Reset the SMC (System Management Controller). Guess how? Shut down and pull the power plug out for a minute. Replace and power back on. Voila, they all work again.
The card slots can be worn or damaged, if they are used a lot or abused.
I also suggest getting some corded USB card readers for most or all of the Mac’s in your lab.
I and others had this issue. I solved my issue by next update and only used Sandisk cards as some others would not work. Also if you use an external card reader then no issue.
SD card readers broken
