No matter what I do, if I format an SD card in the Mavic Air, neither of my Macs (2017 iMac and a Mid 2015 MacBook Pro) can read it when plugged into their built in SD card reader via the SandDisk adapter. I'm using the Sandisk Extreme Pro 32gb cards.
To extract any pictures if I format on the Mavic Air I have to attach the drone with the USB C cable and power it up. Then my Macs can read the disks.


Everything works fine if I format on the Mac as exFAT in Disk Utility.


On the DJI GO 4 app, however, the software tells me format may be requiered.

Posting in case this helps anyone.

Glad to know that you have solved the issue, and thank you very much for sharing the information with us. Hope you have a good time on flying the drone!