Hi @_dynek
If you want to start using a real home automation (HomeAssistant) then the motherboard in the HC2 is a good start.
Unfortunately, you cannot reuse the components that Fibaro has mounted on the motherboard.
You have to remove these components as my pictures show, otherwise the system will behave strangely.
It is not possible to use Fibaro's Z-wave module, it must be replaced by a USB Z-wave stick.
Fibaro's backup can't be used either because it only works on your Fibaro system and is encrypted.
So when you start with HomeAssistant, you start with a completely clean system free from Fibaro's limitations.
It is also important that you read the information that describes how to install HomeAssistant.
In the motherboard BIOS you need to enable UEFI boot and also disable Secure Boot as described in the manual.
https://www.home-assistant.io/installation/generic-x86-64
In the beginning you will feel unfamiliar with how the system is handled, but after a while you will be happy with your system and the fact that you are free from Fibaro's limitations.
And don't forget to search YouTube, where you will find lots of videos on how to install HA, how to add integrations, add-ons, devices, etc.
There is a sea of integrations and add-ons ready to use.
https://www.home-assistant.io/integrations/
And if you e.g. want a voice-controlled automation, it is available in HA ready to use.