New modem

Hi klewin67, if you are referring to a new Cox rental Gateway, it can be shipped or swapped at a local Cox Solution Store. If  you are referring to your own 3rd party modem, once you are ready to connect it, please give us a call to activate it. https://www.cox.com/residential/support/cox-certified-cable-modems.html  

What model device do you have now and why do you want a new one? Is something not working? Also, do you mean a stand alone modem or a Cox Panoramic gateway?