Hello. Yes this is possible. I am assuming that you can locate the computers in the vicinity of the router or are you looking for it to travel further distances?
Based upon your router, we can get this working.
Sure. If the proximity of the computer allows for the cable to reach, it's just a matter of connecting the wired devices to the router via cable.
Based on what you've stated, it will.
Therefore, just plug in the device to the router in port 1-4 and your device should obtain an ip address automatically and everything should work just fine.
If you have any other questions, let me know. I can assist you when you get ready to plug it in.