Question about Arris SURFboard SB5120 Modem

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Ethernet Port seems to be a failure, but the USB works fine

Initially I hooked up my modem through the USB port on the back. Now that I want to set up a network, I need to use the ehternet port, and when i tried to do so, it could not detect any PC activity at all. The LED lights still read Power, Recieve, Send, and Online, but no PC?ACTIVITY.

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Re: Ethernet Port seems to be a failure, but the USB...

I managed to fix the problem manually using a computer kit I had.
The problem was the Ethernet port on the modem was messed up
you should check if the small wires are on the back are all facing towards the top if not you should try to fix its actually pretty easy
no need to pay for a repair :D

Posted on Jan 31, 2008

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Re: Ethernet Port seems to be a failure, but the USB...

Doing the same thing to me Im going crazy. The ethernet port works for my xbox 360 but when I put the thernet into my computer it dont work.. just the usb gives me internet activity HELP!

Posted on Feb 14, 2008

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Re: Ethernet Port seems to be a failure, but the USB...

I am having the same problem! ... I called Motorola today and explained my problem and told him everything I had checked through troubleshooting. The fact that I could get reception through the USB cable port but not the Ethernet port, told them that I may have a bad Ethernet port on my modem. They have a two year waranty that will cover replacing the modem. They just need the serial number listed on the bottom. Mine is older so I will be looking into repairing the port or replacing the modem myself. If that doesn't fix it, it will be back to the ole' drawing board. Any suggestions would be great!
I am also using a Belkin router and all of my drivers are up to date.

Posted on Jan 29, 2008

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All you need to do is plug the Ethernet cable into the LAN port on your HP Desktop and then into the LAN port (not the WAN port) of your cable modem.

The second thing is if its only a cable modem, then I suggest you proceed with caution as there is NO built-in firewall on a cable modem. Yes you will get on the net, but you are likely to be attacked with virus the moment you connect. I suggest you check very carefully whether the cable modem (if that's what it is) does/does not have a firewall as you would be very unwise connecting up like that.

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the prob may b with the ethernet adapter on the computer or the ethernet port on the modem or the ethernet cable.....
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