Chapter 4: BIOS
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ACPI Settings
WHEA Support
Select Enabled to support the Windows Hardware Error Architecture (WHEA) platform and
provide a common infrastructure for the system to handle hardware errors within the Windows
OS environment in order to reduce system crashes and enhance system recovery and health
monitoring. The options are Disabled and
Enabled
.
High Precision Event Timer
Select Enabled to activate the High Precision Event Timer (HPET) that produces periodic
interrupts at a much higher frequency than a Real-time Clock (RTC) does in synchronizing
multimedia streams, providing smooth playback and reducing the dependency on other
timestamp calculation devices, such as an x86 RDTSC Instruction embedded in the CPU.
The High Performance Event Timer is used to replace the 8254 Programmable Interval Timer.
The options are Disabled and
Enabled
.
Native PCIE Enable
Enable this feature to grant control of PCI Express Native hot plug, PCI Express Power
Management Events, and PCI Express Capability Structure Control. The options are Disabled
and
Enabled
.
Native ASPM
Select Enabled for the operating system to control the ASPM, or Disabled for the BIOS to
control the ASPM. The options are Auto, Enabled, and
Disabled
.
Headless Mode Support
Select Enabled for the system to function without a keyboard, mouse, or monitor. The options
are
Disabled
and Enabled.
NUMA (Available when the OS supports this feature)
Select Enabled to enable Non-Uniform Memory Access support to enhance system perfor-
mance. The options are
Disabled and
Enabled
.
Super IO Configuration
Super IO Chip AST2500
Serial Port 1 Configuration
Serial Port 1
Select Enabled to enable the onboard serial port specified by the user. The options are
Enabled
and Disabled. Enable this feature for the next two features to display and only
the Change Settings feature is available for configuration.
