A while ago I raised a ticket regarding my Mac's inability to read microSD cards that are used in the AIO-5 Lite and had to use a Windows computer to read and to copy the video files over to my Mac via the LAN.

Today I found the original MicroSD card which came with the AIO-5 Lite. It's a 64gb card formatted to FAT32. I popped it into the Mac to see what was on it and it can be read.

I now have a better idea of what is happening, but still not why it is happening. 

The Mac can read 64gb cards but not 128gb or 256gb cards.

Hopefully a resolution to this can be found.

Thanks.