Switches and Hubs
Hubs connect different computers with each other on an Ethernet network based on UTP cabling. A hub has several connectors for RJ-45 cabling, a power source, and signal lights to indicate network activity. Most hubs are stackable, meaning that if you need more ports than the hub contains, you can connect it to another hub to expand its capabilities.
A hub is the slowest connection device on a network because it splits the bandwidth of the connection among all the computers connected to it. For example, a five-port 10/100 Ethernet hub divides the 100Mbps speed of Fast Ethernet among the five ports, providing only 20Mbps of bandwidth to each port for Fast Ethernet and 10/100 adapters, and only 2Mbps per port for 10BaseT adapters. ...
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