What do all the lights mean on my SpeedTouch USB?
Power (left): The USB light represents the power to the modem. If it blinks, the modem is starting up. If it is off, the modem is either disconnected from the computer, or the computer is off. Network Connection or ADSL (right): The DSL light represents proper DSL connection to your ISP. If it is solid green, the modem has synced. If it is not solid green, the modem has not synced, and you need to call your ISP.