Advertisements Because you're on FIOS you already had MoCA - the Actiontec router is serving as the bridge from Ethernet to Coax. Those who don't have FIOS need a device to serve as the bridge from Ethernet to Coax. A Roamio Pro/Plus or 4-tuner Premiere can serve as that bridge IF it's in a location where BOTH ethernet and coax can be connected to it. If not, then a MoCA adapter is needed in a location where it can connect to the router AND coax to establish the MoCA bridge. Edit: For example, I'm on Cox. Neither my Roamio Pro nor my Premiere 4 is near an ethernet connection. Therefore, I cannot use them to create the MoCA network. Instead, I have a MoCA adapter in my furnace room, where it is connected to both coax and an ethernet switch to establish the MoCA network.