The cards I ordered in February 2017 were UHS-I, not Class 10. All the cards I've received since are those slower Class 10 They look almost the same, except the UHS-I card has a U1 logo instead of the Class 10 logo in the lower left corner and a capital I next to the MicroSDHC logo in the lower right corner. Other differences include the fact that the UHS card is made in Taiwan, not China, and the overall read/write speeds are much faster. At the moment I can't find any information about UHS cards anywhere. As if she had never existed. As far as I can tell, SanDisk first printed this line of High Endurance cards in Taiwan using more expensive materials, and they've since gone down the cheaper route as they've never sold them for recording above 1080p. I get about 21-23MB of a dataset. and read speeds from the newer ones, which is slightly better than advertised. I give these new cards 3 stars, they are nothing special. If I remember correctly, the UHS card seems to give me a write speed of around 60. I would give these cards 5 stars and if I could get them anywhere I would.
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