@BornInNorway81 UHS-II requires a compatible port to operate at full speed because they have a second row of contacts that UHS-I cards do not. Their speeds range from 150MB/s to 300MB/s compared to the 80-90MB/s of UHS-I cards. As yet we don't know if the Switch's microSD slot is physically compatible with UHS-II standard. UHS-I cards will work in a UHS-I port, but not at full speed.
Side comment: these Hori cards really only have a 15MB/s write speed? What garbage.
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Re: Official Hori Nintendo Switch Micro SD Cards Set a Handy Benchmark
@BornInNorway81 UHS-II requires a compatible port to operate at full speed because they have a second row of contacts that UHS-I cards do not. Their speeds range from 150MB/s to 300MB/s compared to the 80-90MB/s of UHS-I cards. As yet we don't know if the Switch's microSD slot is physically compatible with UHS-II standard. UHS-I cards will work in a UHS-I port, but not at full speed.
Side comment: these Hori cards really only have a 15MB/s write speed? What garbage.