Have you tried swapping the cards in the slots ?
I have 2 Sandisk 128gb in mine and for some reason one of the slots does not read one of the cards however it reads the other and the one that does not work is fine in the other slot.
Might be worth swapping if you have not tried.
I have 2 Sandisk 128gb in mine and for some reason one of the slots does not read one of the cards however it reads the other and the one that does not work is fine in the other slot.
Might be worth swapping if you have not tried.