What's the difference between a hub and a switch?

The word "switch" is often misused and misunderstood. In a nutshell, a hub is a device that the speed of individual port is shared. For instance, the maximum speed of a 10BT hub with five users on it is 10/5, i.e. 2BT. In a switch, the speed of individual ports is not shared. Each port is connected independently at the maximum speed, such as 10 or 100BT. However, most dual-speed hubs has a feature of auto sensing and switching between the two speeds. Remember, the word "switching" in a hub means very different from a "switch."