Data information will be sent to every port, that is, all workstations connected to this hub can feel the existence of data, except the destination workstation.

The main function of the hub is to regenerate, shape and amplify the received signal, so as to expand the transmission distance of the network, and at the same time concentrate all nodes on the node centered on it. It works in the first layer of the OSI (open system interconnect) reference model, that is, the physical layer.