This isn't a limitation of the storage, the card has a UHS-I interface, which has a bus speed of 104MB/s. UHS-II cards exist and are somewhat faster. The upcom

This isn't a limitation of the storage, the card has a UHS-I interface, which has a bus speed of 104MB/s. UHS-II cards exist and are somewhat faster. The upcoming microSD Express interface standard will support a 985MB/s bus speed.