Google “structured cabling”.

I remember that job and also building the server myself from scratch. Qmail, Squirrelmail, Dovecot and all that. It lasted about a year until we bought something as it was hell. Now days with IP reputation and spam filters - even if the server ran, you’d never get anything delivered outbound.

OP, the most I would do is an SMTP server that relays through Gmail for delivering alerts from monitoring systems. Anything else is pain.

No, set it to Dual Button Mode. If you manage to wire it backward then to check “swap inputs”.

I’m pretty sure any short press toggles on or off. Long press does a fade up/down.

First link I believe is it.

None of the second link. Those are all actual dimmers.

Seems in over the pond speak “Retractive centre off”. The idea being a hot feeds then switch. Then, depending if you press up or press down one of two momentary outputs provide power to the SW1 and SW2 ports on the Dimmer2.

Here’s another example/brand

https://www.sparksdirect.co.uk/1-gang-6ax-2-way-retractive-and-centre-off-switch-grid-module-in-painted-white-schneider-gug202ocwpw

Probably this:

https://www.bgelectrical.uk/uk/wiring-devices/grid/range/20a-20ax-3-position-modules

Google makes it surprisingly hard to search for basic hardware in other countries.

A traditional rheostat? No. You can use it with momentary switches though so that you push one way and things get brighter, push the other way they get dimmer.

Example:

https://store.leviton.com/products/15-amp-120-277-volt-decora-plus-rocker-double-throw-ctr-off-momentary-contact-single-pole-ac-quiet-switch-commercial-spec-grade-self-grounding-back-side-wired-white-5657-2w?variant=42426985283814

That’s a router/firewall job, not a switch job.

I think you may have the model number wrong as I can only find a C7000-100NAS which is a modem/router combo with WiFi.

My first thought is you are probably only using the 2.4Ghz radio and 2.4Ghz is slow compared to 5Ghz. I’d start by logging into the device and seeing if you can enable 5Ghz and see how that goes. The down side of 5Ghz is that it doesn’t have nearly the range of 2.4 GHz. Though, you may be fine… so yeah, try to get your current device running 5Ghz and go from there.

This person seems to be talking about ISP service delivery. I don’t think they’re necessarily wrong - hotspots will likely be the future for residential in many cases and I doubt a lot of companies will invest in new wired tech. Look at the issues Google fiber ran into. But wired will likely never be dead barring Star Trek level tech.