This system is much more than that. It's a smart home platform with the LMCE server intending to be the center of the house. With that said, put two network cards in the system, and connect your modem directly into the first network port, and connect a switch into the second, put your computers etc on the switch.
What do you get with this?
* A file server, ready to use, to copy anything including media.
* Automatic detection of network devices such as NAS bricks for more storage, IP telephones and tuners, and Orbiters (touch panel remotes which you can make out of any PDA, tablet, or laptop)
* the ability to have LMCE handle your telecom