Mice and Keyboards use the "Human Interface Device" (HID) USB class. MIDI device...

		kalleboo on Aug 18, 2014 \| parent \| context \| favorite \| on: A brief history of USB, what it replaced, and what... Mice and Keyboards use the "Human Interface Device" (HID) USB class. MIDI devices use their own special class instead of HID: http://www.usb.org/developers/docs/devclass_docs/midi10.pdf Same as how printers or scanners aren't HID, MIDI is different enough that it needs its own protocol.

Oh I see, I forgot there were other classes.