Posting this here in the hope that it assists someone in the future.
I host my instance of HomeAssistant in a VM on unRAID. I have recently purchased a ConBee II USB-Gateway so I can add Zigbee devices.
I added the USB using the unRAID VM GUI, like I imagine most would, by just checking the tick box next to the device. This didn't work. While Home Assistant found the device, the integration would not add (there were communication errors).
The trick was to add