Intel S845WD1-E Product Guide - Page 27
ACPI, require an ACPI-aware driver, video displays, and hard disk drives - power switch
UPC - 735858159272
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Page 27 highlights
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 the S845WD1H server 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 7, page29) • Support for a front panel power and sleep mode switch Table 5 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 5. 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) Less than four seconds On (ACPI G0 - working state) Less than four seconds On (ACPI G0 - working state) More than four seconds Sleep (ACPI G1 - sleeping state) Less than four seconds Sleep (ACPI G1 - sleeping state) 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) Description 27