Chapter 3 – AMI BIOS Setup 43COM Express Module COM-BT-A303.4.5 Advanced: Dynamic Digital IO ConfigurationOptions summary:GPI* Direction OutputInput Optimal Default, Failsafe DefaultSet GPIO as Input or OutputGPO* Direction Output Optimal Default, Failsafe DefaultInputSet GPIO as Input or OutputOutput Level Hi Optimal Default, Failsafe DefaultLowSet GPIO Output as Hi or Low.