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Chapter 1: Introduction
1-11
1-3 Recovery from AC Power Loss
BIOS provides a setting for you to determine how the system will respond when
AC power is lost and then restored to the system. You can choose for the system
to remain powered off (in which case you must hit the power switch to turn it back
on) or for it to automatically return to a power on state. See the Power Lost Con-
trol setting in the BIOS chapter of this manual to change this setting. The default
setting is Last State.
1-4 PC Health Monitoring
This section describes the PC health monitoring features of the C2SBA+II/C2SBA+/
C2SBA/C2SBE. The motherboard has an onboard System Hardware Monitor chip
that supports PC health monitoring.
Onboard Voltage Monitors for the CPU Core, +1.8V, +3.3V, +3.3V
standby, +5V, Vbat and ±12V
The onboard voltage monitor will scan these voltages continuously. Once a voltage
becomes unstable, it will give a warning or send an error message to the screen.
Users can adjust the voltage thresholds to dene the sensitivity of the voltage moni-
tor by using SuperO Doctor III.
1-5 ACPI Features
ACPI stands for Advanced Conguration and Power Interface. The ACPI specica-
tion denes a exible and abstract hardware interface that provides a standard
to integrate power management features throughout a PC system, including its
hardware, operating system and application software. This enables the system to
automatically turn on and off peripherals such as CD-ROMs, network cards, hard
disk drives and printers. This also includes consumer devices connected to the PC
such as VCRs, TVs, telephones and stereos.
In addition to enabling operating system-directed power management, ACPI pro-
vides a generic system event mechanism for Plug and Play and an operating- sys-
tem-independent interface for conguration control. ACPI leverages the Plug and
Play BIOS data structures while providing a processor architecture-independent
implementation that is compatible with Windows 2000, Windows XP, Windows 2003,
Windows 2003 Servers.
Enhanced Power Management
The onboard ICH9/ICH9R chip provides advanced power management functions
that will greatly improve the performance of various low-power (suspend) states and