Definition: Given an Amazon customer review, write a title for the review. The preferred titles are under fifteen words.
Input: The modem works fine and set up is fairly straight forward, but what wasn't clear when I bought this modem is that it has a router built in.  If you already have a router; I have an Apple Extreme, configuration is difficult.  If you're trying to open specific ports it becomes very difficult.  If you turn off the router in the modem, you can't use the DHCP, so then my Apple router isn't assigned an IP address.  In short, it's pretty stupid to have a router with one RJ45 port and no wireless capability.  I fought with this for four weeks before I gave up and ordered a straight modem from another company.  Everything works fine now.

The modem works fine and set up is fairly straight forward