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Thank you so much for your help, you are so right because i found those cables with many heads One USB and the other head is eithernet and alot more.
But unfortunatly it was a waste of money because it was gonna burn my computer the head itself was producing smoke , and i understand why now, coz it is a totally differnt technology,cant be simply replaced.
about the wirless card i wouldnt want to put it in my PC because its slower than cables, but i wouldnt mind slower connection on my laptop + its more expensive :(.
and the eithernet card is just about 12 $.
I owe U leo ;) Best regards

Posted by: Lojaine at December 8, 2006 12:37 AM

Most DSL Modem's I've seen either come with a USB connection, Ethernet connection or both. Those that come with both, in my experience, usually *do* allow you to connect through both Ethernet and USB at the same time. These usually also include built-in routers. I have yet to see the variety mentioned in the above article where a modem would have both USB & Ethernet ports but only one of them is usable at any one time.

Posted by: Eli Coten at December 16, 2006 11:31 AM

Leo, I have a question. what if when I go to Device manager and I don't see anything that says network adapter what should I do.
by the way, I have an old computer which I put together (I took a power supply from another computer and some cards)
the computer is working but I can't go on the internet. it shows no info about network adapter.
I'm using a modem to access the internet
I used to use it for my laptop, until it received a shock. Now I'M BACK WITH A BIG DESKTOP.
HOW CAN YOU HELP ME WITH THAT.

Posted by: Frandy at December 3, 2007 3:31 PM

Just so you know, there is a modem that has a USB and a DSL port and it only lets you use one at a time. It is the Motorola SURFboard SB5120 Cable Modem. I am trying to use both at the same time but it only allows the first one that demands the internet. So the other will say "Limited or No Connectivity." If there are any settings to make this work then please let me know.

Posted by: Chris at September 24, 2008 3:19 PM

Leo;
I was unable to connect to wildblue.net, I called circut city (warrenty) the girl said I needed to configure a ethernet card, she told me how,but I have forgotten and would like to have the configuration again.I have a emachamine win2000

Posted by: Bettie Gatewood at January 14, 2009 11:50 AM

Leo, I have a question. How is a computer without a network adapter able to connect to the network with a USB-modem? Where does the computer get its MAC or physical address from ?

The USB Modem - or any modem for that matter - acts as a network adapter in that regard.
Leo
23-Feb-2010

Posted by: Vaibhav Jain at February 22, 2010 7:37 PM
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