Activity lights signify activity nothing more nothing less. The power and internet lights are green and solid.

Repair Us Ds Light Blinking On Xfinity Internet Connection
Modem lights blinking really fast. As stated in the title the 24 and 5ghz lights are blinking intermittently with the 24 ghz light blinking about every second. Try to power cycle your modem and observe if you can connect to the internet. As long as the wi fi device is able to receive and send data over its wireless connection to the router the blinking light can be ignored. Which also points towards the bad combination switch. The port number from where im wired is also green and solid. I personally recommend any.
Similar to routers most modems both cable and dsl have a light dedicated to the broadband connection. The lights blinking on your router just mean that your passing information to and from the internet has nothing to do with how fast or slow your internet connection is. It could be something as harmless as the isp running some routine tests against client modems to assess network conditions. This light is often labeled as online cable sync or signal and usually has a symbol. Lastly during the improper supply of voltage to the car the indicator blinks fast. Solving turn signal blinking fast issues 3.
If not please check the light status and behavior of the arris box and the modem. But now they are constantly blinking the 24ghz is green and the 5ghz is blue. In trying to figure out this problem i timed the blinking not sure if this matters. The reason computers modems routers etc have blinking lights at all is because back in the day when it was showing off its crazy expensive servers to management and the higher ups the higher. Both blink off for about 8 seconds and blink on for about 12 seconds. Thus before you move ahead to fix the issue determine the problem which is causing the turn signal blinking fast.
Never turn a modem off. The routers lights blink when the device sends and receives data transmissions indicating the data has been properly processed and sent to either the wi fi device or the modem. The 5ghz light blinks in a sort of pattern where it is on for one second off for another second then rapidly turns onoff twice in span of another second then the pattern continues.