We recently moved into a 1960's house. 4 of the bedrooms have dual RJ-45 and RJ-11 receptacles. When I got cable installed, they had to run a new wire from the telephone pole out front. I was told the coax in the house was really old and wasn't being used. I was also informed the previous owners must have had DSL.
Our network is working great with the new cable setup, but I wanted to make use of the Ethernet that has already been ran throughout our house (it is Cat 5e). I found out one of the Ethernet cables runs all the way to the garage, then out of the crawl space, up to this adapter thing. I just wanted to see if someone could shed some light on what might be going on here? What might this adapter be for?