838
Open source router firmware project OpenWrt ships its own entirely repairable hardware
(www.theregister.com)
This is a most excellent place for technology news and articles.
https://en.m.wikipedia.org/wiki/2.5GBASE-T_and_5GBASE-T
https://www.tp-link.com/se/business-networking/unmanaged-switch/tl-sg108-m2/
now you have ;)