Not used much nowadays but worth mentioning as the word 'HUB' seems to be
used interchangeably with the word 'SWITCH'
A HUB is a hardware device
which enables the connection of several LAN devices together via network
ports thus enabling those devices to talk to each other.
A HUB and a SWITCH do pretty much the same thing in that they enable
LAN devices to talk to each other just that the HUB did it less
efficiently by broadcasting all data across all ports of a hub whereas a
switch routes the data only to the device that it is intended for. The net
result of this is that a 100Mbps HUB shares it's 100Mbps across all the
ports it has whereas a SWITCH will have 100Mbps per port making it much
Typically a HUB would have had 4, 8, 12, 16, 20, 24 or 48 ports
enabling a corresponding amount of devices to be connected to it.