Chapter 3 – AMI BIOS Setup 44Fanless Embedded Box PC BOXER-66403.4.4.4 SIO Configuration: Serial Port 4 ConfigurationOptions summary:Use ThisDeviceDisabledEnabled Optimal Default, Failsafe DefaultEnable or Disable Serial Port (COM)Use Automatic Settings Optimal Default, Failsafe DefaultIO=2F8; IRQ=11;IO=3F8; IRQ=11;Select an optimal setting for IO device