You can’t adapt it, but you can check the back side of the outlet. If it uses a Cat5e or better cable, and there are no daisy chained wired to it, you may be able to. Once you confirm that, you’ll of course need to find where the other end goes to as that would have to go to your router/switch.

TPLink Omada. I came from Ubiquiti and I think it’s better in a few things, namely reliability, cost, availability, etc. As simple if not simpler to configure.

Your router routes. It also assigns IP addresses to devices. So no, you can’t just connect a switch to a modem and be Online. It may be possible if your ISP gave you multiple IP addresses and you set them static to your devices, but you also do not want your private devices directly on public Internet.

You got conned by marketing. First of all, you need a switch and not a splitter. Maybe it’s just your terminology, so share what you bought and we can help. If it actually is a splitter, especially since you say it says Cat7, it has to be some POS junk that should be returned. As for Cat8 cables, anything you can buy on Amazon that is Cat7 or Cat8 is probably garbage. You should only ever use Cat6 at home. I would replace those as well and pick up a CableMatters or Monoprice Cat6 patch cable in whatever length you need. Stay away from flat cables as well.

That’s a lot of stuff if you want a small footprint. Why not just get a Deco or Eero mesh router so you have routing and Wifi in one small footprint, and then get some Ring cameras and doorbell?

If you really insist on going Ubiquiti, why not the Dream Router which will also give you most of this in a single package?

Yes.

Bad cable somewhere.

Do you own the neighborhood? Lol.

Looks like something that should not exist.

Running Ethernet is always the only answer.

You should, at minimum, have a surge protector. But not much will help if lightning actually hits your line. I mean… it’s going to roast.

Bad cable somewhere.

Nah. Cat6 all day.

Is it a shitty cable?

Good deal, but I think Deco and Eero are better. I went straight to a proper network and never used mesh, but I always read most issues with Orbi and Nest.

That won’t do anything. Powerline is trash, but so are extenders. You’ll have better luck with a mesh system, but you still have to mind the placement of the satellites so they are in good range of the main unit to relay the signal to where you need it. But the best will always be running an Ethernet cable.

Do you not have a router? If you connect modem to switch, I’m not sure how you are getting an IP unless it is sharing the one public IP you were given by the ISP. You should have modem > router > switch > PC.

You can’t have multiple routers like that. If it’s rentals, you’d really need to get and pay for your own ISP and then you can register your modem on the coax line. Otherwise you’d need to convince the huge house owner or whoever owns the ISP contract to invest in a better network, whether it’s some kind of mesh system or a proper ceiling AP setup.

I don’t know, but you can definitely enable 5G on your other AP. To limit interference, just set them to different channels. There are many more non-overlapping channels on 5G than 2.4G.

No idea what this link speed is. I thought it’s typically either 100, 1000, etc. Mbps. What do you get when you run a speedtest? Is it maxed at 400? You can try to uninstall your NIC from Device Manager, reboot, and check again.