Using the Ethernet LAN lights to troubleshoot the Actiontec MI424WR router An Ethernet light should be illuminated for each port (1-4) where you have an Ethernet cable connected. If you have an Ethernet cable plugged into a port that does not have its light illuminated, follow the steps below to diagnose the problem.
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Make sure your equipment is plugged in and that the power is working in the rest of your house