The kibibyte is a the unit of data transfer rate. The binary prefix kibi means 210, or 1024; therefore, 1 kibibyte per second is 1024 bytes per second. The unit symbol for the kibibyte per second is KiB / s.
exbibyte per seconds
The exbibyte per second is a multiple of the unit bit for Data Transfer Rate. The prefix exbi (symbol Ei) is defined in the International System of Units (SI) as a multiplier of 260 (1 exbi, short scale), and therefore 1 exbibyte per second = 260 bytes per second = 1152921504606846976 bytes per second. The exbibyte per second has the unit symbol EiB/s.