== MB and Mb may refer to == Megabyte (MB), a measure of amount of information used, for example, to quantify computer memory or storage capacity.Megabit (Mb, or properly: Mbit), a measure of amount of information commonly used in the combination Mb/s (megabit per second) to express the rate data is transferred. MB may further refer to Bachelor of Medicine, an academic degree Lee Myung-bak, the president of South Korea, using the initials from his given name Macbeth MacBook Mandalay Bay, a ho… (More on Mb)