I am running Win XP and currently using a USB cable to connect to the
cable modem.
If I remove the USB cable and connect an Ethernet cable I cannot get a
connection.
The modem does not show up as a device in Networks Connection. Any help
would be
appreciated.
The modem won't show up in device manager at all as it's not directly
connected to the PC (it goes through your network card).
Our cable modems here remember the last used connection, so if you switch
and the cable company only allows you one IP address, the second connection
won't work.
My suggestion... Power off the cable modem for a while, connect the network
cable and then try it again in the morning.
The ethernet connection should be much better than the USB connection since,
generally, network cards use much less processor power than USB.