Apple USB-C DAC dongle

I try to connect an Apple “USB-C to headphone jacket” as DAC to the USB2 port via an adapter on a R4. It is not seen by Volumio. LS USB -t shows the dongle as “human interface device”, with driver USBHID.
How do I get this to work.

Needs a reboot after connecting it. Then USB3 becomes an Option under output. Roon sees it as a separate endpoint.