In summary what I'm trying to do is this:
lsmod
snd_usb_audio 356 352 0
snd_usbmidi_lib 45056 1 snd_usb_audio
snd_rawmidi 45056 1 snd_usbmidi_lib
mc 65536 1 snd_usb_audio
because something seems to work but I still can't understand the right procedure is always if this exists
then example:
sudo modprobe -f snd_usb_audio
and so on:
sudo modprobe -f snd_usbmidi_lib
some of these loaded modules conflict with the following error:
qemu-system-ppc: libusb_release_interface: -4 [NO_DEVICE]
But not always
I can also avoid it
but this involves the freezing of Morphos and therefore I cannot complete the saving of the peripheral.
I will try other solutions
If anyone is interested any suggestions would be nice

I still don't know Morphos well to see this
the saving of my real hardware with the usb-audio stick where do I find it once I have configured my PowerBook with the usb-audio stick in Morphos?
Thank you.
[ Edited by white 30.01.2022 - 21:29 ]