Conbee II in UnRAID VM issue resolved - JiltedGeek/HomeAssistant GitHub Wiki
Add the following to your VM's XML configuration:
<serial type='dev'>
<source path='/dev/serial/by-id/<yourusbid>'/>
<target type='usb-serial' port='1'>
<model name='usb-serial'/>
</target>
<alias name='serial1'/>
<address type='usb' bus='0' port='4'/>
</serial>
Replace with your USB Device ID.
Mine looked like this: ((usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_xxxxxxxxx-if00))
Where xxxxxxxxx is your serialnumber of your Conbee II USB device, which you should not post in the Internet ;)