Chapter 3 – AMI BIOS Setup36Fanless Embedded Box PC BOXER-66393.4.4.2 SIO Configuration: Serial Port 2 ConfigurationOptions summary:Use ThisDeviceDisabledEnabled Optimal Default, Failsafe DefaultEnable or Disable this Logical Device.Possible: Use Automatic Settings Optimal Default, Failsafe DefaultIO=2F8; IRQ=3;IO=3F8; IRQ=4;Allows user to change Device's Resource settings. New settings will be reflected on ThisSetup Page after System restarts.Mode: RS232 Optimal Default, Failsafe DefaultRS422RS485UART RS232, 422, 485 selection