Can't connect modem to motherboard using CAT5 cable.

Tomash

Member
Feb 11, 2006
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OK. It works fine when I use the USB cable that came with the modem, but when I try to use the CAT5 cable, and connect the modem to the LAN ports on the motherboard, it won't work.
Usually I'd say drivers aren't installed, but they are. They must be.
It's a DFI nF4 LanParty Ultra-D, with dual LAN (Nforce ethernet, and Marvell LAN).
I've just installed the drivers, and it still won't connect to the net.
Help.
 

GeekDrew

Diamond Member
Jun 7, 2000
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Do you have "Local Area Connection" in your network connections? If you go to the command line and type "ipconfig", what does it tell you?
 

Tomash

Member
Feb 11, 2006
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I can't get my Ethernet ports to talk to my Cable modem.
The modem installation program can see that I have an Ethernet adapter, and when I connect the modem to it via a CAT5 cable, I can see the PC Activity LED light up, but they won't talk to each other.
 

GeekDrew

Diamond Member
Jun 7, 2000
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Go to start -> run, type in "cmd", and click OK.

In the Command Interpreter window that opens, type "ipconfig /all" and press enter. Then you should get some useful info.

Also, your link to that picture is malfunctioning.
 

Puffnstuff

Lifer
Mar 9, 2005
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Have you tried a different cable? Your cat5 could be bad. Now if you've been connecting the modem via usb to the pc and not using the lan ports it's possible that the ports are not enabled in bios.
 

Tomash

Member
Feb 11, 2006
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Originally posted by: Puffnstuff
Have you tried a different cable? Your cat5 could be bad. Now if you've been connecting the modem via usb to the pc and not using the lan ports it's possible that the ports are not enabled in bios.
Yeah, one of the cables I've been trying to use was a CAT5 Patch. I was told on another forum it may be the cause of my problems, so I bought another non-patch Cat5 cable, and it's working fine now.
 

bruceb

Diamond Member
Aug 20, 2004
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Odds are the 1st cable you tried to use is what is known as a Crossover Cable ... it swaps the Xmit & Rec at one end
A Router to PC needs a Straight Thru Cable ... IE 1 to 1 , 2 to 2 ... etc thru all 8 pins .. you can tell by looking at the ends

The general Rules of Cable connection are:

NIC to NIC - Crossover Cable. (Computer directly to second computer).

NIC to Hub/Switch - Straight Cable. (Computer to Hub/Switch).

NIC to Uplink - Crossover Cable. (Computer to Uplink on a HUB/Switch).

Hub/Switch (regular) to Hub/Switch (regular) - Crossover Cable.

Hub/Switch (regular) to Hub/Switch Uplink - Straight Cable.

Hub/Switch Uplink to Hub/Switch Uplink - Crossover Cable.

Cable/DSL Router WAN Side is an Uplink jack.

Cable/DSL Modem RJ-45 port is the same as a Switch port.

A lot of newer switches and Routers have MDX ports (look at your hardware Data Sheet), if such is the case it does not matter this type of port would adapt to the cable.

This other link explains how to properly color code a CAT 5 cable end ... for Straight use either 568A or 568B codes at both ends (568B is the recommended colors)
For Crossover cable wire one end as 568A and the other end as 568B

http://www.lanshack.com/make-cat5e.aspx