Networking setup question

Hi all,I use a cable modem from my ISP to connect to the internet and a wireless router for my home network. I keep getting booted from the internet. When i contacted my ISP they said to use the ethernet cable for the modem, not the USB, and the usb for my router. One problem, my router doesn't have any usb ports. Any ideas of how I can set this up to get the reliability of the ethernet for my modem and still have a wireless network connected? Thanks! confused

 

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