16x4 DOCSIS 3.0 cable modem plus a built-in AC1900 Dual Band (2.4 GHz and 5 GHz) WiFi Gigabit Router with four Gigabit (GigE) Ethernet ports, a firewall DFS, Power Boost, and more. This product is ...

An Ethernet cable plugs into the LAN port of your router or modem/router combo. The LAN ports are used to connect devices within your local network, such as computers, printers, or gaming consoles.

and a router, which forwards traffic to the modem and distributes responses to the requesting machines. If the cable modem/router has Wi-Fi, it is a "wireless gateway" (see cable/DSL gateway).

Best modem-router combo Arris SURFboard SBG8300 gateway $ ... examine the specifications such as internet connection compatibility (e.g., cable, fiber, etc.), speed capability, coverage area ...

Depending on what type of internet you have, you may need to purchase a cable modem in addition to your router. Some ISPs, like Spectrum, include the modem for free but charge extra for a router.