If the cable is in a wall box I would consider just stuffing it all back in the wall for now. If you cut and terminate then later find the end, you might regret that it was cut.
It's a long shot, but get a cable tester, that might give you some idea if it is connected to a piece of equipment and just maybe how long the cable is. Of course, even if it gives you a length, it might be coiled somewhere.
It might be risky, but try plugging the cable into a device (spare switch, laptop, computer, etc) and see if you get any connection to something. I doubt it though, it is probably the connection to a different room and the cables are stuffed behind a wall plate or even into the wall.
Is the fiber modem new? Could it have been leftover from a cable modem setup? I just bought a house that is wired throughout with cat 5 and just found the concentration point. About ten, unlabeled, cables all coiled up and no connectors stashed in the ceiling of the unfinished basement. So now I need to find the ends and decide if I want that to be my network closet. Fun stuff.
If the cable is in a wall box I would consider just stuffing it all back in the wall for now. If you cut and terminate then later find the end, you might regret that it was cut.
It's a long shot, but get a cable tester, that might give you some idea if it is connected to a piece of equipment and just maybe how long the cable is. Of course, even if it gives you a length, it might be coiled somewhere.
It might be risky, but try plugging the cable into a device (spare switch, laptop, computer, etc) and see if you get any connection to something. I doubt it though, it is probably the connection to a different room and the cables are stuffed behind a wall plate or even into the wall.
Is the fiber modem new? Could it have been leftover from a cable modem setup? I just bought a house that is wired throughout with cat 5 and just found the concentration point. About ten, unlabeled, cables all coiled up and no connectors stashed in the ceiling of the unfinished basement. So now I need to find the ends and decide if I want that to be my network closet. Fun stuff.