Modem needs to be connected through RJ45 and RJ11 connectors while routers only support RJ45 connectors.To connect to internet modem is necessary while router is necessary to connect devices in local area network or two different networks.

The modem is used to connect to internet while the router is used to connect to different networks. Difference between modem and router The modem is used to connect to internet while the router is used to connect to different networks.The downside of using hybrid device is that ISPs may cost some extra money. Difference Between Cable Modem and Router is that a cable modem is a digital modem that sends and receives digital data over the cable television (CATV). It also lets to make sure that you are using best quality devices. A modem serves as your internet gateway, whereas a router serves as a central hub for all of your devices. A router, on the other hand, links your devices to your local area network (LAN) or WiFi network and allows them to communicate wirelessly. The modem is wired to the Internet via the cable companys coaxial. Using two different devices have more flexibility as compared to using a hybrid device. A modem connects you to the internet or a wide area network (WAN). The two major components in a small computer network are a modem and wireless router. Having this hybrid device, you do not need separately configure modem and router. Router/modem combo is built to simplify the process of creating LAN/WLAN. This device is hybrid type and is called router and modem combo. Both router and modem are different in terms of functionality and usage but some internet service providers offer a device which combined functionality of modem and router.

Modem vs router