A few of the highest-rated cable modem router combos are the Netgear Cgd24g 54 Wireless Cable Modem Router Gateway, the Motorola Surfboard SBG6782-AC Wireless Gateway and the Zoom Telephonics AC1900 Cable Modem/Router. The Zoom DOCSIS 3.0 Cable Modem and Wireless-N Router is also highly rated.
A modem is a device that allows the user to connect to the Internet from an Internet service provider, whereas a router is a device that connects to the user's modem and broadcasts that modem's Internet signal, allowing devices to share Internet access with other devices to form a network. Many manufacturers have combined these two functions into a single device, resulting in modem router combos.
Modern modems and routers are equipped with ethernet ports to hard-wire devices into the user's network. Some may also come with USB ports to provide network access to external devices such as printers or external hard drives. This is useful for situations in which printer or file access must be shared between people.
Typically, most Internet service providers offer the option of renting a modem, router or modem router combo at an additional cost per month. As an alternative, users can purchase their own sets of modem and routing devices to suit their networking needs.