Automatically installs a generic "USB Composite Device" and "MIDI Device" driver the moment you plug it in.
Many users assume the Q49 is class-compliant, meaning the operating system’s generic USB audio/MIDI driver should handle it. And yes, it will work for basic note input. However, to achieve (including sustain pedal response and proper CC message transmission), a dedicated driver from Alesis (now owned by inMusic Brands) is essential.