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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.
It doesn't matter. Port configuration can switch around and the bottleneck is still there. Traffic with in the broadcast domain (i.e. subnet) will handled by the switch alone.
There is WiFi onboard so it can have some actual benefits, depending on design and how user access resources, but how likely you're going to saturate that 1/2.5G link? Not even you stream some 4K movies from Plex to iPhone will does that.
I think you might have missed the point: with a managed switch that 2.5Gb port can be used to handle multiple WAN and LAN connections simultaenously. My home network includes two WANs and six LANs split purely by VLAN tagging and that 2.5Gb connection should handle all of them just fine.
Which I do specified "in the broadcast domain". Sure you can use it with VLAN but that more than the scenario I'm describing.