I'm looking at setting up an external Router and putting my Hub into Modem mode. The plan is to have the Router placed in my hallway, have an ethernet cable run under the floor back to my Hub situated in the corner of my living room next to the virgin TV box.
My only concern is that there's an ethernet cable linked from my hub to my Virgin TV. Does this mean I need to run multiple ethernet cables from my Router (one connecting the hub to the router, then one from the router to the Virgin TV?) or can I leave the hub connected to the TV even though it's in modem mode?
Only one Ethernet port will be active on the hub in modem mode, which will plug into th WAN port on your new router. So you will need to connect the virgin TV box to the router (and any other device you want to connect via Ethernet.