Data Support
Motorola SB5100 Cable Modem
Last Updated: Fri, 06 May 2011 > Related Articles
Summary
Learn about the available ports and an explanation of the status lights on a Motorola SB5100 cable modem.
Solution
The Motorola SB5100 is a DOCSIS 2.0 cable modem.
Front View

After the cable modem has successfully registered on the network, the Power, Receive, Send, and Online indicators illuminate continuously to indicate that the cable modem is online and fully operational. For more details, refer to the Modem Lights section.
Modem Lights
The modem lights indicate the current status of your cable modem. To troubleshoot any connection problems, use the table below.
| Ethernet or USB Connection - Modem functioning correctly |
| Modem in Standby - Press the standy button to restore back to normal |
| Modem Looking for Cable Connection |
| Modem Light | Status | Problem | Solution |
|---|---|---|---|
| Power | Off | No power. | Verify power supply connections, the power switch on the modem itself, the electrical outlet, and make sure the outlet is not connected to a switch. |
| Flashing | An error has occurred during normal operation. | Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support. | |
| Receive | Slow Flashing | Searching for cable connection. | Verify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support. |
| Fast Flashing Modem | Searching for cable connection. | If this is a new modem or a replacement modem, contact Cox with the MAC address. If there are several MAC addresses on the modem, use the HFC or RF MAC address. View MAC Address Label. | |
| Off | No connection cable connection. | Verify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support. | |
| Send | Flashing | Scanning for the upstream frequency. | Verify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support. |
| Online | Flashing | Scanning for the network connection. | Verify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support. |
| Activity | Blinking | None. Transmitting or receiving data. | N/A |
Manufacturer Resources
- Data Sheet (PDF)
- Modem Manual (PDF)
- Modem Driver Location
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