My SD card slot does not does not recognize my SDHC 32GB San Disk. What is wrong???
My desktop is IMAC model A1418, bought 12-12-2016; has mac os catalina Version 10 15 1. This is the first time I attempted to use the SD card slot, and it does NOT recognize my SDHC 32GB SanDisk Ultra. What
could be wrong; is there something I must turn on first?
iMac 21.5", macOS 10.15