synoxia

Hi, all these laptops share the same OEM chassis (Quanta computer) and the drivers are basically the same for all of them. Very likely, also the bios might be the same. Today, by mistake, i accessed the hidden bios settings tab, mux switch options were there, fan controls, amd cbs and all stuff.. Does anyone know the combination to access the hidden menu on these laptops? I don't want to flash another bios if it's not needed to unlock the settings