Just to be clear with units, bits is not same as bytes and MiB/s is not same as Mbps (Megabits per sec). MiB is mebibyte which is 2^20 bytes.
Hope I am not wrong here.
MiB is a Mebibyte which is 1024 Kibibytes (1024 bytes)
MB is a Megabyte which (sometimes) is 1000 Kilobytes (1000 bytes)
more detailed info here