Both cards are inappropriate for the devices I need them in - despite being within all manufacturer specifications. Cards literally not recognised by the devices. Sandisk know about this issue, and its been 3 months waiting for the manufacturer to receive more cards in stock. Its been support ticket after support ticket and they have literally just told me "we don't know when we will have any in stock". This is pretty frustrating for a company of this size - these cards are useless to me.