Chapter 3 – AMI BIOS Setup 56Pico-ITX Board PICO-APL43.4.5.1 Serial Port 1 ConfigurationOptions summary:Use This Device DisableEnable Optimal Default, Failsafe DefaultEnable or Disable this Logical Device.Possible: Use Automatic Settings Optimal Default, Failsafe DefaultIO=3F8h; IRQ=4IO=2F8h; IRQ=3Allows user to change Device's Resource settings. New settings will be reflected on ThisSetup Page after System restarts.