Advantech SOM-5871 User Manual page 55

 Serial Port 1 Configuration
Feature Options
Disabled
Serial Port
Enabled
Auto
IO=3F8h; IRQ=4
Change Setting IO=2F8h; IRQ=4
IO=3E8h; IRQ=4
IO=2E8h; IRQ=4
Description
Enable or Disable serial port (COM)
Select an optimal setting for Super IO Device
47 SOM-5871 User Manual