Intel D865PCK English Product Guide - Page 19

Desktop Board Features Power Management Features Power management is implemented at several levels, including: • Advanced Configuration and Power Interface (ACPI) • Hardware support: ⎯ Power connectors ⎯ Fan connectors ⎯ Suspend to RAM (Instantly Available PC technology) ⎯ Resume on Ring ⎯ Wake from USB ⎯ Wake from PS/2 keyboard/mouse ⎯ PME# wakeup support ACPI ACPI gives the operating system direct control over the power management and Plug & Play functions of a computer. The use of ACPI with the desktop board requires an operating system that provides full ACPI support. Power Connectors The desktop board has two power connectors. See Figure 11 on page 35 for the location of the power connectors. Fan Connectors The desktop board has two chassis fan connectors (Intel Precision Cooling Technology) and one processor fan connector. See Figure 11 on page 35 for the location of the fan connectors. Suspend to RAM (Instantly Available PC Technology) CAUTION For Instantly Available PC technology, the 5 V standby line for the power supply must be capable of delivering adequate +5 V standby current. Failure to provide adequate standby current when using this feature can damage the power supply and/or effect ACPI S3 sleep state functionality. CAUTION Power supplies used with this desktop board must be able to provide enough standby current to support the standard Instantly Available (ACPI S3 sleep state) configuration. If the standby current necessary to support multiple wake events from the PCI and/or USB buses exceeds power supply capacity, the desktop board may lose register settings stored in memory. 19