I bought a SanDisk 256GB Extreme microSDXC UHS-I Memory Card with Adapter - C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-256G-GN6MA . When I inserted the card to a Nvidia Shield TV, I got an error that I could not format the card and to insert a card that is at least a UHS-I rated card. As far as I know this is a UHS-I rated card.
I am still within 90 days of being able to return. Is this a incompatatility with the Nvidia Shield tv, defective product, or a really good fake(packaging looked legitimate).