Truenas core - Home assistant - RFXCOM not working

[doum33]

hello everyone, I just installed home assistant by following this tutorial: nice job!
I will just have one question: I have an RFXCOM that I am trying to integrate into home assistant.
When I choose Serial connexion, then my device appears like that: /dev/cuaU0 - n/a, s/n: n/a
When I submit it, I got an error:

Logger: homeassistant.components.rfxtrx
Source: components/rfxtrx/init.py:76
Integration: RFXCOM RFXtrx (documentation, issues)
First occurred: 16:04:06 (2 occurrences)
Last logged: 17:05:32

Connection timeout: failed to receive response from RFXtrx device

On configuration.yalm, I added these two lines at the end of the file:

rfxtrx:
device: /dev/cuaU0

Does somebody have an idea?

Could switching from Truenas Core to Truenas Scale help me in my case? Does the installation by containers allow easier management of USB peripherals?

Thanks a lot for your help.