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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 ?
The SkyX Accelerator 750 is available now in both 311 Mbps and 622 Mbps configurations.
This ADSL2+ bonded broadband home router integrates two Actiontec ADSL2+ modems to deliver 48 Mbps of throughput downstream and 4 Mbps upstream -- enough for several HDTV and standard TV streams -- without requiring new DSLAM equipment at the central office or new copper cabling in the subscriber's home.
This product works with all of the decoders used by the Diamond 381VDO plus MPEG-4 encode - Simple Profile @ D1, 6 mbps, 30fps.
The same quality level at a lower bitrate of 4 Mbps - designed specifically for applications such as video over ADSL.
Silver Peak's data center appliances lead the industry in WAN capacity, supporting up to 155 Mbps in a single appliance with ten times the flow processing capacity of the closest competitor.
5 Mbps service means that customers can get twice as much speed for less than they pay for DSL, with the reliability of cable modem service over a network built to deliver a superior data experience," said RCN's Executive Vice President & Chief Technology Officer Timothy Dunne.
For example, at the 4 Mbps FIR (fast infrared) data rate, existing IrDA protocol might achieve a data transfer rate of 2 Mbps, whereas the IrSimple protocol would attain up to 3.
Eastern European Service Provider Deploys Ciena Metro Optical Solution in Network Offering Residential and Business Customers IPTV, VoIP and High-Speed Data Speeds up to 100 Mbps