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Definition: Kbps

(KiloBits or KiloBytes per SECond) One thousand bits or bytes per second. Kbps is a measurement of peripheral data transfer or network transmission speed. The correct abbreviation is "b" for bits and "B" for bytes; however, "b" and "B" are often interchanged. See space/time, Mbps and Gbps.

Lower Case "b" - Kbps, Kb/sec, Kb/s
Kilobits per second is used to rate serial data transmission devices such as analog modems.

Upper Case "B" - KB/sec, KB/s
Kilobytes per second is used to rate parallel data transfers such as from memory to disk in earlier computers.