Audio pinout for hero box

Does anyone know what the pin outs are for the mini pc herobox earphone jack ?

BUTTONS AND PORTS

Ports:
Micro-HD(2.0) x 1
USB-A 3.0 x 2
USB-A 2.0 x 2
USB-C x 1
VGA x 1
3.5mm Audio Jack x 1
DC Charge
Micro SD Card Reader x 1

THEY IS NO JARK FOR HEADPHONE . BUT THEY IS A LOCATION AVAILABLE TO INSTALL ON MOTHERBOARD LABELED AS SPEAKER BUT NO COMPONANT TO MAKE IT FUNCTIONAL. THEY IS ALSO A MIC LOCATION ALSO OPTIONNAL.