Modem or access device
This connects the home to the service provider's network, although the technology varies by cable, fiber, DSL, fixed wireless or other service.
Router
This directs traffic between the home network and other networks and usually provides local network services.
Wi-Fi access point
This provides the wireless radio connection; it may be built into the router.
Gateway
Providers often supply one box that combines several of these roles.
General consumer technology information only. Interfaces and menu names change. Before resets, reinstalls, storage changes or other major actions, verify that important data is backed up and use current manufacturer/service-provider instructions.