I recently moved in with family and noticed a Ethernet cord coming out of the wall in my room (mine is the only room with one). It’s obviously not connected to the modem or router, and I’m not sure where the other end is. The pictures linked are the only places I’ve found that it could go. EDIT: okay, it definitely connects to the surge protector outside. It doesn’t seem necessary since it’s not currently in use. That being said, can I connect it to the router instead and use the Ethernet?
The larger box is standard CATV hookup. A number of those cables coming out of the larger box probably go to different rooms for cable TV. One of those cables could provide internet but it would have to terminate in a router/modem where the cat 5e cable would originate and then run to different outlets. Get with the cable company serving the area. It looks like a Comcast system and not an ATT Uverse.