In disk benchmarking tool fio there is statistics for brandswitch
Run status group 0 (all jobs):
READ: bw=20.9MiB/s (21.9MB/s), 10.4MiB/s-10.8MiB/s (10.9MB/s-11.3MB/s), io=64.0MiB (67.1MB), run=2973-3069msec
According for docs:
Values outside of brackets are power-of-2 format and those within are the equivalent value in a power-of-10 format.
As far as I know 1 MB/s = 8MiB/s. But here 20.9MiB/s complies to 21.9MB/s.