AFP's optical normal through adaptors help eliminate the need for traditional fiber patchcords on the front of patchbays and a rugged and reliable way to carry, monitor, and route your high-speed signals on the back of the patchbay. Only when an industry standard LC connector is plugged to either of the front ports, will the signals be switched out for monitoring, temporary network re-configurations or maintenance. All `normal' patching configurations are seamlessly preconfigured and hidden behind the patch-panel.