After the router gets powered up, all signal strength LEDs will turn ON and stay ON for about 40 seconds or until the router's modem registers on a network - after this, the LEDs will start displaying the router's current signal strength. | After the router gets powered up, all signal strength LEDs will turn ON and stay ON for about 40 seconds or until the router's modem registers on a network - after this, the LEDs will start displaying the router's current signal strength. |