That is working, I was confusing on adding xhci & adding usb device.
Now I have my terratec soundcard connecte on my XPenology VM.
I need to test but "sounds" great
Now my concern if you have any advice is what is the good config for HDD
Perhasp I will open a new thread for that as I am using VMDK and not any kind of raid or other.
I will open a thread to share with you guys on Gen8 what design you made with physical disk, fault tolerance, boort on USB or not and how you manage upgrade of DSM with a virtualized Syno and others VM
Thanks for your help and see you on another thread