I have just received a chinese USB dongle based on Mediatek MT7612U that is quite particular...
When plugged in it start with VID_0E8D&PID_2870 showing itseld as a SCSI CDROM, which can be mounted and contains the windows driver. In windows, once you install such driver it switch to the well known VID_0E8D&PID_7612 detected as a Mediatek adapter and working ok. This combination of VID&PID is definitely suported my mt76 driver, but is it possible to make this device to switch to the proper mode?
In Windows it does not installa a tool, so it seems it is done at driver level