AAEON PICO-HD01 - Manual (Page 58)

P I C O - I T X B o a r d P I C O - H D 0 1
Digital IO Port Configuration
Options summary: (default setting)
Input GPIO1/GPIO2
Direction Output
Set GPIO1/GPIO2 as Input or Output
Input GPIO3/GPIO4
Direction Output
Set GPIO3/GPIO4 as Input or Output
Hi Output Level
Low
Set GPIO Level when used as Output
Chapter 3 AMI BIOS Setup 3-17