After migrating all services previously hosted by a rather noisy HP Microserver, my rack cabinet looks miserably empty.

From the left:

* WiFi access point antenna for outdoors LoRa gateway
* Nezha RiscV (doing nothing yet)
* Raspberry Pi 4, hosting Unifi server and access point for LoRa
* NanoPi R2S doing PPPoE, DNS and firewall

WiFi happily worked on Raspberry's built-in WiFi interface... until I placed it inside cabinet, which is why I recycled the old external WiFi device for the AP.