AIMB-782 User Manual 48To "Enable or Disable" the Chassis Intrusion monitoring function. When it isenabled and the case is opened, the speaker beeps. CPU Warning TemperatureUse this item to set the CPU warning temperature. When the system reachesthe warning temperature, the speaker will beep. ACPI Shutdown TemperatureUse this item to set the ACPI shutdown temperature. When the system reachesthe shutdown temperature, it will be automatically shut down by ACPI OS to pro-tect the system from overheat damage. CPUFAN Mode Setting“Enable or Disable” CPUFAN Mode to SMART FAN setting SYSFAN Mode Setting"Enable or Disable" SYSFAN Mode to SMART FAN setting3.2.2.12 Second Super IO ConfigurationFigure 3.19 Super IO ConfigurationAIMB-782 supports 2nd super IO for COM 3~6, this page of BIOS menu is to setrespective serial port configuration.