Have FIOS into Actiontec MI424WR Rev.1 router. It feeds a wired connection and a few wifi devices. I need to add additional wired upstairs, away from router. I have a wired outlet upstairs, and want to use my old Linksys BEFSR41 as a switch for a few wired devices. How do I connect to the Linksys to turn off the DCHP? I don't want to disturb the Actiontec. Thanks