QuickSwitch Model 4193 allows users to access any one of 8 separate fiber optic networks by simply pushing a button on front panel of unit. This simple pushbutton switching eliminates plugging and unplugging fiber optic patchcords, minimizing connector wear and increasing system reliability. Model 4193 also insures isolation between networks/devices with its internal circuitry. Common port converts selected fiber optic network port to 100BaseTX interface. This efficient network switch acts as a signal source with no optical signal loss.