Advantech MIC-5602, User Manual

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27 MIC-5602 User Manual
Chapter 4
A
MI BIOS
Setup
4.4.1.6 Intel SpeedStep™ Technology
Intel SpeedStep technology is a feature found in mobile Core 2 Duo processors.
There are four different settings to choose from.
! Maximum Speed (default setting): the CPU is to run at its maximum clock
speed.
! Minimum Speed: the CPU speed is set to run at "Lowest Frequency Mode", i.e.
lowest core operating frequency supported on the processor.
! Automatic: the CPU will automatically switch to a lower speed and lower voltage
operation when the system is running on battery power. Only by operating an
OS that supports the Intel SpeedStep technology can this feature function cor-
rectly.
! Disabled: the CPU will operate at default clock speed.
4.4.2 ACPI Configuration
Figure 4.7 ACPI Configuration
Two types of power management technologies are supported by the MIC-5602, ACPI
and APM. ACPI is the newer of the two technologies and puts power management in
the hands of the operating system. APM is controlled by the BIOS. And, it is available
by default when ACPI is disabled. Only one power management interface (ACPI or
APM) can be in control of the system at a time.
The options for "ACPI" are "Yes" or "No" in order to enable or disable ACPI support
for the operating system. The default setting is "Yes".
Note! If ACPI is disabled, the functionality of graceful OS shutdown becomes
unavailable.