How to Connect a Router to a Modem (with Pictures) - wikiHow
wireless networking - How to connect a wifi router to a cable modem router? - Super User
ASUS CM-32 Docsis 3 Cable Modem Wifi Router (AC2600, 32x8)
Cable Modem or Wi-Fi Modem Router Combo: Which one to buy? - Pick My Modem
Identify your home's WiFi Router and Cable or DSL Modem — Insteon
ARRIS SURFboard 16x4 Cable Modem / AC1600 Dual-Band WiFi Router. Approved for XFINITY Comcast, Cox, Charter and most other Cable Internet providers for plans up to 300 Mbps. - Walmart.com
Amazon.com: NETGEAR Cable Modem WiFi Router Combo C6220 - Compatible With All Cable Providers Including Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 200 Mbps | AC1200 WiFi Speed
Cable modem Technicolor TC7200.20 WiFi
Linksys Official Support - Setting up a Linksys router with Cable Internet Service on a classic web-based setup page