Chapter 3 – AMI BIOS Setup 94Fanless Embedded Controller BOXER-6843-ADS3.5.4 Digital IO Port ConfigurationOptions SummaryDIO1 InputOutput Optimal Default, Failsafe DefaultSet DIO as Input or Output.Output Level LowHigh Optimal Default, Failsafe DefaultSet output level when DIO pin is output.DIO2 InputOutput Optimal Default, Failsafe DefaultSet DIO as Input or Output.Output Level LowHigh Optimal Default, Failsafe DefaultSet output level when DIO pin is output.DIO3 InputOutput Optimal Default, Failsafe DefaultSet DIO as Input or Output.