What should I check in the BIOS USB wise?NUT does support my new UPS according to the NUT plugin websiteHow can I run diagnostics? It freezes for ~30 secs doing nothing.
Synology is Linux based and OPNsense is FreeBSD and as I wrote there have been problems with the usb-hid interface on FreeBSD. Which version of NUT does OPNsense use? pkg info will tell you.