Cable Modem Troubleshooting: Linksys BEFCMUH4

Light patterns, images, manuals and more helpful info for the Linksys BEFCMUH4 cable modem –

Manufacturer: Linksys Model: BEFCMUH4
linksys befcmuh4
Modem Light Indicators
Power

Off – Gateway is not receiving power.
On (Green) – Modem power is activated and receiving power.
On (Red) – Self Test

Diag

On (Red) – Self Test.
Off – Self Test Successful.

USB On – Indicates USB device is successfully connected.
WLAN

On – Indicates a wireless device is successfully connected.

Link/Acct

On – Indicates an ethernet device is successfully connected to port.
Flashing – Indicates data transmitted over the ethernet port.

Full/Col

On – Indicates full duplex operation.
Flashing – Indicates network collisions. (Infrequent collisions are normal)

100

On – Indicates a 100Mbps connection.

Cable

Flashing – Gateway is in registration process.
On – Gateway is acquired.

Receive Flashes in sync with data received to the gateway.
Send Flashes in sync with data sent from the gateway.

Notes and Useful Information:

Manufacturer Product Website

{ 6 comments… add one }
  • Dale November 21, 2006, 4:23 pm

    How can I boost the power for this unit? I have to be within 10-15′ of it for my laptop to work with it. Any idea? Is there a booster I can get for it?

  • Eric von Brockdorff January 23, 2007, 7:26 pm

    I could use some help: trying to run a teamspeak server … but none can log on other than myself. I read something about port forwarding… I have had no luck. Any advice would be appreciated. Thank you for your help. (btw…. I have two Ip’s one web one computer … the server on ts is a clan server CotSW ip 72.134.48.165 the comp is 192.168.0.10) Thanks again

  • ME August 27, 2007, 11:49 am

    i am tryin to stop ppl from usin my internet u kno like i need to secure it cuz right now its unsecure and ppl r usin my stuff can u plzz help me A.S.A.P

  • KATHYA July 20, 2008, 6:34 pm

    How much it cost???

  • matt August 13, 2008, 2:17 pm

    The full/col light doesn’t light up when i plug in my desktop but it does when i plug in my laptop. why is this? is there a setting i can improve to strengthen my connection on my desktop?

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