Some discussions about getting (USB) devices connected:

• https://forum.netgate.com/topic/183961/nut-package-2-8-1-and-above

• https://forum.netgate.com/topic/102959/nut-package-2-8-0-and-below

• https://github.com/networkupstools/nut/issues/2159

• https://forum.netgate.com/topic/183698/nut-disconnects-eaton-smart1500lcd -- in particular, how to investigate and set up USB quirks on FreeBSD/pfSense platforms

• https://forum.netgate.com/topic/162961/nut-with-riello-sentinel-pro-2200-usb-connection-cant-make-it-work