Quote Originally Posted by XC700116 View Post
What kind of service? DSL or Cable? In all honesty get a separate router, so it's 2 pieces yes, but typically performs better, and if one fails, you don't have to buy both again.
I agree. Get separate devices. In most cases, performance is better.

Modem is how your network talks to the world. Router is how your network connects to the modem (and provides wifi)