Mb / MB

1. Mb is short for megabit and is 1,000,000 bits or 10⁶, this term is often used to express the rate data is transferred. For example, "10/100 Mbps" represents 10 or 100 megabits per second, the common speed of a standard network card.
2. Also abbreviated as meg, MB is short for megabyte. A MB is a common measurement used with computer storage media. A Megabyte is equal to 1,048,576 bytes; however, the IEC defines that one MB is equal to 1,000,000 bytes, or 10⁶. Therefore, a MB could really equal either of these values. 
3. mb or MB is also short for Motherboard, see our motherboard definition for additional information.

Also see: BIT, Byte, Hard disk drive definitions, Mbps, Measurement, Mebibit, Mebibyte, Mega-, Memory definitions