Bps may refer to any of the following:
1. Short for bits per second, bps is a measurement of the data transmission speed indicating of how many bits pass a certain point in one second. The higher the bps rate, the faster the download or upload time will be. For example, a Modem that is rated at 28.8 bps is capable of transmitting a maximum of 28.8 bits every second.
2. Short for bytes per second and also sometimes abbreviated as B/s, Bps is a speed that is measured in bytes transmitted each second. The difference between the two abbreviations is the uppercase and lowercase "b."
Tip: When dealing with bits, a lowercase "b" is used. A capital "B" is used for bytes.