bought a Garmin GPS that quickly saturates its internal storage after update. Not recognized. Tried formatting PC .nothing more, not taken into account by Garmin. Recognition Protocol + sofistiqué check 2ém bought a Smartphone Samsung Note 3 lite: same not recognized. Formatting PC, not recognized. A 4-16gb card class recognized immediately on the Note 3 ... Obviously when we see opinions 1 star opposite opinions 5 stars we say: no bowl, bad card .. or bad manipulation or product not suitable .... usually no problem with Transcend products (USB ...) we pass in (lost) time with that stuff.