C2SBM-Q User's Manual ACPI Sleep Mode Use the setting to determine if you want to use the ACPI (Advanced Configuration and Power Interface) power management on your system when the system enter into the sleep mode. The options are S1, S3 and S1S3. High Precision Event Timer Select Yes to activate the High Precision Event Timer (HPET), which is capable of producing periodic interrupts at a much higher frequency than a Real-time Clock (RTC) can in synchronizing multimedia streams, providing smooth playback and reducing the dependency on other timestamp calculation devices, such as an x86 RDTSC Instruction embedded in a CPU.
The High Precision Event Timer is used to replace the 8254 Programmable Interval Timer. The default setting is No . Power Button Behavior If set to Instant-Off , the system will power on or power off immediately as soon as the user hits the power button. The options are Instant-Off and 4-second Override. Resume On Modem Ring Select On to “wake your system up” when an incoming call is received by your modem. The options are On and Off . Resume On PME# Select On to “wake your system up” from the PME#. The options are On and Off . PS2 KB/MS Wake Up Select Enable to “wake your system up” from the S1 and S3 state. The options are Enabled and Disabled .
USB Wake Up Select Enable to “wake your system up” from the S1 and S3 state. The options are Enabled and Disabled . Power Loss Control This setting allows you to choose how the system will react when power returns after an unexpected loss of power. The options are Stay Off, Power On, and Last State . Legacy USB Support Select Enabled to enable the functionality of the Legacy USB Support. The options are Enabled and Disabled . 4-8