(The first light, (power) is the power light. If the light is not on, the broadband cat is broken. The second light, (LINK, CD, ADSL) is the DSL light that represents the connection between the MODEM and the central office equipment. When it is on, the line is normally activated. When it is on, it means the line is not activated (simple The light is connected to the Internet. When it is on, it means that you can access the Internet. When it is dark or flashing, you cannot access the Internet. "Maybe your ADSL fee is gone, or the line)