On Wed, 15 Jan 2020 14:13:59 -0500, Paul wrote:

That converts a USB3 computer connector into a GbE Ethernet port.

Thanks Paul & Mark for the help on converters from USB to RJ45.

The Comcast repair person said the problem was NOT in their equipment, so,
the kids already wasted a hundred bucks or whatever Comcast charges them.

The Internet has been flaky, so the Comcast guy brought in his own modem,
and that worked, but when he set up the old modem back, it worked also.

So _something_ is flaky.

The kids sent me a photo of the Costco modem which is an Arris SB6141,
where the router is an AC router.

Given "something" is flaky, what I'll have them to is buy a new 3-foot long
coax to go from the wall to the modem, and then I'll see if I can pick up
the latest Costco modems and maybe a new router and Cat5 cables, and ship
them the whole package (since it should only cost about $200 overall).

The kids said AT&T is also in the area, using fiber optics, so, maybe we
can also switch them to AT&T (if it's competitive) but I don't know if that
means a DIFFERENT modem or not yet; but everything else (router & cables)
should be the same, is it?

Hmmm... how does AT&T get fiber optic into an apartment complex that
already has Comcast cable anyway? Do they re-use the same coax? Or do they
have a different (fiber optic?) connection?
--
I have no experience with ANY of this 'cuz I have WISP, which is rooftop
antenna stuff.