My daughter has a sonos 5 for her dorm. When I talked to the campus IT department, they said they will not allow routers to connect to their network. They seem to think we can use the Ethernet port in the room to hardwire the speakers to the network. Will that work? Also, they need the MAC ID to do so. I assume it’s the 13 digit number on the back of the device starting with 5C? Also, is the 7th number typically the number 0 or the letter O? Hard to tell from looking at it. Is there anything else I need to think about to get this done? Thanks.