Power   Illuminates solid green to indicate that power is being applied to the cable modem.

PC   Illuminates solid green to indicate that an Ethernet/USB carrier is present; Blinks   to indicate that Ethernet/USB data is being transferred.

Cable   Blinks during software upgrade and to indicate cable activity.

Status   Illuminates solid green when the modem is registered on the network; Blinks to   indicate one of the following conditions:
  • The cable modem is booting up and not ready for data.
  • The cable modem is scanning the network and attempting to register.
  • The cable modem has lost registration on the network, and will continue blinking      until it registers again.