Internet modems have a wide variety of symbols and LEDs that can change meaning depending on their color and activity. For example, modem lights that are flashing rapidly can mean something completely different than a light that is on steadily or not at all.
What do the lights on my router mean?
In this article, we explain what the colors of the modem light mean, how to read the symbols on a modem, and provide additional links to manuals and support documents for modems from popular ISPs.
The LED lights on modems communicate functionality and activity on the Internet device. Specific colors can indicate which aspects of the device or Internet service are working, if there is an error, or if something is broken or offline.
Below are some of the most common modem light colors and their meanings.
