Intel BOXD845GLVAL Product Specification - Page 35
Table 11., Effects of Pressing the Power Switch
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Product Description 1.13.1 ACPI ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. The use of ACPI with this 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 13 on page 37) • Support for a front panel power and sleep mode switch Table 11 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. Table 11. Effects of Pressing the Power Switch ...and the power switch is If the system is in this state... pressed for Off (ACPI G2/G5 - Soft off) On (ACPI G0 - working state) On (ACPI G0 - working state) Sleep (ACPI G1 - sleeping state) Sleep (ACPI G1 - sleeping state) Less than four seconds Less than four seconds More than four seconds Less than four seconds More than four seconds ...the system enters this state Power-on (ACPI G0 - working state) Soft-off/Standby (ACPI G1 - sleeping state) Fail safe power-off (ACPI G2/G5 - Soft off) Wake-up (ACPI G0 - working state) Power-off (ACPI G2/G5 - Soft off) For information about The Desktop Boards' compliance level with ACPI Refer to Section 1.5, page 17 35
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