Intel Desktop Board DG41RQ, 10-Pack BLKDG41RQ-1OPACK Manual De Usuario

 

31

 

Power management is implemented at several levels, including: 
•  Software support through Advanced Configuration and Power Interface (ACPI) 
•  Hardware support: 

⎯  Power connector 
⎯  Fan headers 
⎯  LAN wake capabilities 
⎯  Instantly Available PC technology 
⎯  Wake from USB  
⎯  Wake from PS/2 devices 
⎯  Power Management Event signal (PME#) wake-up support 

ACPI gives the operating system direct control over the power management and Plug 
and Play functions of a computer.  The use of ACPI with the board requires an 
operating system that provides full ACPI support.  ACPI features include: 
•  Plug and Play (including bus and device enumeration) 
•  Power management control of individual devices, add-in boards (some add-in 

boards may require an ACPI-aware driver), video displays, and hard disk drives 

•  Methods for achieving less than 15-watt system operation in the power-on/standby 

sleeping state 

•  A Soft-off feature that enables the operating system to power-off the computer 
•  Support for multiple wake-up events (see Table 8 on page 33) 
•  Support for a front panel power and sleep mode switch   
Table 6 lists the system states based on how long the power switch is pressed, 
depending on how ACPI is configured with an ACPI-aware operating system. 

Off 
(ACPI G2/G5 – Soft off) 

Less than four seconds 

Power-on 
(ACPI G0 – working state) 

On 
(ACPI G0 – working state) 

Less than four seconds 

Soft-off/Standby 
(ACPI G1 – sleeping state) 

On 
(ACPI G0 – working state) 

More than four seconds 

Fail safe power-off 
(ACPI G2/G5 – Soft off) 

Sleep 
(ACPI G1 – sleeping state) 

Less than four seconds 

Wake-up 
(ACPI G0 – working state) 

Sleep  
(ACPI G1 – sleeping state) 

More than four seconds 

Power-off 
(ACPI G2/G5 – Soft off)