Linux has supported USB 2.0 for a long time.  Recently, USB Audio 2.0
support was added.

Most USB 2.0 audio devices do not conform to the USB Audio 2.0
specification because Windows does not support it.

Is there any way to know if the device is conform to usb 2.0 spec?

One other question, is the module used for 2.0 the same as 1.1 (snd-usb-audio... or something similar)

Regards,

Sylvain