AOpen WARM TOUCH WT22M-RH Technology Manual page 25

COM Connector Pin 36 = SuperIO(F81865F) Pin 53 as GPIO01
COM Connector Pin 38 = SuperIO(F81865F) Pin 54 as GPIO02
COM Connector Pin 40 = SuperIO(F81865F) Pin 56 as GPIO04
Reserved
Cash Drawer "DOUT bit1" pin output control
Cash Drawer "DOUT bit0" pin output control
Reserved
Cash Drawer "DIN bit0" pin input status
Reserved
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