Having trouble adding a Conbee II dongle to HomeAssistant on an M1 Mac mini.

As the title says, I'm having one hell of a time getting HAOS to see my Conbee II.

I have HA running in UTM, which works fine, but I simply cannot get HA to see the Conbee. UTM can see it, and says it's passing it through, but HA can't see it. I figured that perhaps UTM is the issue, so installed it in VMWare Fusion then restored my most recent backup.

Same problem.

VMWare says it's sharing the Conbee, but HA can't see it.

On both setups I have the USB set to 2.0, and I've tried connecting both directly and through an extension lead, but the end result is always the same: HA can't see the dongle.

Am I missing something?