I have purchased a wireless router, I now need to change my modem connection from USB to Ethernet, HOW?
My new wireless router can only connect to my modem by ethernet. My modem is supplied through Optus and is a Siemens Speedstream 4200. I currently use the USB port but need to change the connection to Ethernet, Ive had no luck with getting assistance from anyone. Thanks.
Alright, make sure your ethernet is not disabled shut down the computer and unplug the power supply from the modem. Power up the modem first then turn on your computer. Make sure you leave the modem off for at least 10 minutes. Same goes with a router if you have one. I’ve seen this several times on both cable and DSL. Since there is only one IP address available for most home accounts, the interface that is “initialized” and connected is the only one that works. When you power cycle, the modem configures the interface that is currently connected, hopefully the Ethernet in this case, The ISP doesn’t have to change anything to change interfaces. The advice to power down the modem is the correct way to fix this. Have a good one 
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