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(MegaBits or MegaBytes per SECond) One million bits or bytes per second. Mbps 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, Kbps and Gbps.

Lower case "b" - Mbps, Mb/sec, Mb/s
Megabits per second is used to rate serial data transmission such as Ethernet and Wi-Fi.

Upper case "B" - MB/sec, MB/s
Megabytes per second is used to rate parallel data transfers such as from memory to disk.
References in periodicals archive ?
In terms of year-over-year changes, there was a 27% increase globally in the percentage of unique IP addresses connecting to Akamai at average speeds above 10 Mbps.
The SkyX Accelerator 750 is available now in both 311 Mbps and 622 Mbps configurations.
Offering throughput speeds of up to 100 Mbps both downstream and upstream, this high-end gateway is designed for ultra-broadband VDSL2 delivery to multiple dwelling units or to single-family homes in environments where providers are laying fiber to the curb with VDSL to the house.
Capable of connecting separate networks for up to 125 miles with performance of up to 150 Mbps aggregate user throughput and fully WiMAX compatible, the OS-Spectra Lite has been specifically designed to address the high-bandwidth networking requirements of both telecommunications backhaul as well as applications for large enterprises, including those used in healthcare, education and government industries.
In addition to existing licenses supporting 310 Mbps, 610 Mbps and 1Gps, the new 10000 software licenses include 45 Mbps, 100 Mbps, and 200 Mbps, with Xpress and corresponding upgrades.
The new 20 Mbps service will be added to SureWest's lineup that already includes a 10 Mbps residential Internet connection.
The Fx 100100 is the first programmable silicon solution to provide speeds of up to 100 Mbps in both upstream and downstream directions over a single copper line.