STOP RENTING YOUR MODEM AND ROUTER FROM COX!
If you have Cox Internet service at 500Mbps or lower, this is the perfect combination for you. The modem is certified by Cox (found here - https://www.cox.com/residential/support/cox-certified-cable-modems.html). The Netgear AC1750 WiFi Router (R6400) provides data transfer speeds well in excess of modem's capabilities. Router can be configured by using the Netgear Nighthawk App.
Included: Original power adapters, 1x Ethernet cable
If you are paying $15/month to rent equipment from Cox, you will be better than "break even" by your 4th month with this combination.
***THIS MODEM WILL NOT WORK WITH SPEEDS ABOVE 500mbps, like GIGABlast (1Gbps). You will need to find a more recent modem with DOCSIS 3.1, which will also cost much more. You will need to call Cox to have them "provision" the modem to your home. Some ability to troubleshoot is helpful, but not mandatory.
Local pickup and CASH ONLY. No exceptions.