The different colored lights on a router serve as indicators to show the status of the device’s network connection and activity. The specific colors and behaviors of the lights can vary depending on the brand and model of the router, but here are some general guidelines:

1. Power light: This light typically indicates whether the router is powered on or not. If the light is off, the router is not receiving power. If it’s solid green or blue, the router is turned on and functioning properly.
2. WAN (Internet) light: This light shows the status of the router’s connection to the internet. If the light is solid green, the router is connected to the internet. If the light is flashing or off, the router is not connected to the internet.
3. LAN lights: These lights indicate the status of the connections between the router and the devices connected to it. Each light corresponds to a different LAN port on the router. If a light is solid green, a device is connected and functioning properly. If the light is off, there is no device connected to that port.
4. Wi-Fi light: This light indicates whether the router’s Wi-Fi network is turned on or not. If the light is solid green, the Wi-Fi network is active. If the light is off, the Wi-Fi network is turned off.
5. Activity lights: These lights indicate data transfer activity on the router. They can flash or stay on all the time depending on the amount of data being transferred. Generally, the more data being transferred, the faster and more frequent the flashing.

It’s important to note that the specific behaviors of the lights on a router can vary depending on the brand and model, so it’s always a good idea to consult the router’s user manual for more detailed information about the light indicators.