How can I connect my computer directly to the modem while at the same time, the router is also being connected to the modem. I don't want to connect my computer to the router but I also need my router running at the same time. My modem have only one direct ethernet connection port. Any ideas? Is this what it is for? http://www.amazon.com/TP-LINK-TL-SF...id=1450671678&sr=1-1&keywords=ethernet+switch If that is the solution, does that device have a MAC Address? I need the modem to see my computer mac address. Will the modem be able to see my computer mac address if that device is in between my computer and the modem?