wrote:
On Friday, 29 May 2020 18:38:15 UTC+1, tim... wrote:
In the case of (1), I am limited to where I can put it as the router needs
power. This has to be the last choice option.

The somewhat-lateral approach to that problem is to run the router's power supply over the ethernet cable between the router and a central location.

https://i.stack.imgur.com/8yS3u.png at
https://superuser.com/questions/1311...our-fttp-point

and makes the point it can make it easier to put the router onto a UPS near all the other network equipment.

There's also fairly minimalist PoE extractors for 12V kit, which routers
often a
https://www.amazon.co.uk/DSLRKIT-Act.../dp/B01H37XNHE
(also 5V versions)

and if you don't have a proper PoE injector you can just plug in the
router's PSU via a passive PoE injector/splitter:
https://www.amazon.co.uk/HSeaMall-Pa.../dp/B076LWCLN2

Theo