I have a question about a Toner Probe. Do they work to trace a cable if that the connection between the computer or device that cable is plugged into is separated by say 3 or 4 different switches and cables between each of those 3 or 4 switches andf I am trying to find where one end goes at the ending point past 4 switches and many different network cables, rather than say going just from the back of a patch panel to a wall jack and testing where the cable goes? If I need to clarify what I mean here, please let me know and any help on this is much appreciated.