debounced

hard to say for sure, but U109 and U208 could be UART into those Cisco baseband or radio chips. one placement for the 2.4 GHz (G) and 5 GHz (A), respectively. would be interesting to probe around there and see if you get a serial interface to it… obviously for extra credit ;-)

i use Tailscale on everything these days (or use Headscale if you want to self host the control plane). with the free plan you get up to 100 devices on a “tailnet”, just set the right ACLs to only allow the remote connection ports of choice, pair it with self hosted RustDesk, and you should be good to go. the NAT traversal of Tailscale is pretty good from what i’ve observed, but sometimes you might get stuck on a relay (called a DERP) if it can’t get across the firewall(s).