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Linksys CM3008

Details

     

Modem Information

DOCSIS 3.0 Cable Modem

8x4 channels with speeds of up to 150 Mbps on a wired connection

Cox recommends a DOCSIS 3.0 16x4 or higher modem

Highest Service Level

Go Fast - 100 Mbps

   

Front View

Front View of Linksys CM3008

Click to enlarge.

 
     

Back View

Back View of Linksys CM3008 modem

Click to enlarge.

 

The modem includes the following connection ports:

  • POWER - Connects to the power adapter
  • ETHERNET - Connects devices to the 10/100/1000 RJ45 Ethernet port
  • CABLE - Connects to a coaxial cable
     

MAC Address

MAC Address of Linksys CM3008 modem

Click to enlarge.

 

The information below is usually found on a sticker at the bottom of the modem.

  • The S/N is the serial number of the Linksys CM3008 modem.
  • The CM MAC is the MAC address of the Linksys CM3008 modem.

Troubleshooting

The lights indicate the current status of your modem. To troubleshoot any connection problems, use the table below.
 

Modem Light Status Problem
Power

Power light
On The modem is powered on.
Off No power - Verify power supply connections and electrical outlet. Ensure the outlet is not connected to a switch. Press the Power ON/OFF button on the back of the modem to ensure it is turned on.
Receive

Receive light
Solid Blue Multiple downstream channels are in use.
Solid Green One downstream channel is in use.
Blinking Scanning for downstream channels. - Verify all cable connections and try resetting the modem.
Send

Send light
Solid Blue Multiple upstream channels are in use.
Solid Green One downstream channel is in use.
Blinking Green Scanning for an upstream channel. - Verify all cable connections and try resetting the modem.
Off No upstream channels are in use. - Verify all cable connections and try resetting the modem.
Status

Status light
On The modem is online.
Blinking The modem is registering a connection.
Off The modem is offline. - Verify all cable connections and try resetting the modem.
Ethernet

Ethernet light
On A device is connected to the Ethernet port.
Blinking Data is being transferred over the Ethernet connection.
Off No device is connected, or the device is disabled. - Verify all cable connections and try resetting the modem.
Reset Button

reset button
N/A Press and hold for five seconds to restore settings to factory defaults and reboot the modem.

Manufacturer Resources

User Guide (PDF).

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