Cat.5E 110 Patch Panel 48Port Rackmount w/LED Indicator Identify network ports instantly LED patch panle is equipped with LED indicator on each port. With LED patch panel and Signal Generator(102213), you can instantly identify ports without removing panel wiring or shutting down system. No more cumbersome trial and error port serch with tone generator and probe. Just connect Signal Generator to wall plate. LED indicator on patch panel instantly guidse you to corresponding port. LED patch panel is a powerful port identification solution, especially when you are managing large scale networking US patented UL approved With signal transmiter (102213), LED indicator will guide you to corresponding port instantly