In a typical current Ethernet installation cables will run from each of the network points in an office, building or even (small) organisation to a central point where they all can be connected. In a very small installation this central point may consist of a switch or, in years gone by, a hub. However, the moment the installation becomes somewhat bigger all these cables will converge at a patch panel. A patch panel simply consists of a series of (RJ-45) sockets to which cables may be attached from the rear. A 24-port patch panel is depicted below.