The Arris SURFboard SBG8300 comes equipped with two LEDs, i.e., the Blue LED and the Green LED. In case the Blue light is turned on, you can be sure that the power is connected. The steady green light indicates client availability but zero traffic, whereas the fast blink indicates active 5GHz or even dual-band with WPS turned on. Fast blue light blinking either means access to upstream channels and active router traffic deployment across the 2.4GHz band. The Blue and Green status also reveals that the gadget is downloading firmware.