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X9DRL-3F/X9DRL-iF User’s Manual
ACPI Settings
Use this feature to congure Advanced Conguration and Power Interface (ACPI)
power management settings for your system.
ACPI Sleep State
Use this feature to select the ACPI State when the system is in sleep mode. Select
S1 (CPU Stop Clock) to erase all CPU caches and stop executing instructions.
Power to the CPU(s) and RAM is maintained, but RAM is refreshed. Select Suspend
to use power-reduced mode. Power will only be supplied to limited components
(such as RAMs) to maintain the most critical functions of the system. The options
are S1 (CPU Stop Clock) and Suspend Disabled.
High Precision 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, reducing the de-
pendency on other timestamp calculation devices, such as an x86 RDTSC Instruc-
tion embedded in the CPU. The High Performance Event Timer is used to replace
the 8254 Programmable Interval Timer. The options are Enabled and Disabled.
Trusted Computing (Available if a TPM device is installed)
Conguration
TPM Support
Select Enabled on this item and enable the TPM jumper on the motherboard to
allow TPM support to improve data integrity and network security. The options
are Enabled and Disabled.
Current Status Information: This item displays the information regarding the
current TPM status.
TPM Enable Status
If a security device is detected by the BIOS, this item displays the status of TPM
Support to indicate if TPM is currently enabled or disabled.
TPM Active Status
If a security device is detected by the BIOS, this item displays the status of TPM
Support to indicate if TPM is currently active or deactivated.
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