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Anleitung Zusammenfassung
LAN Wake Capabilities CAUTION For LAN wake capabilities, 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. LAN wakeup capabilities enable remote wake-up of the computer through a network. The LAN subsystem monitors network traffic and upon detecting a Magic Packet* frame, it asserts a wake-up signal that powers up the computer. Instantly Available PC Technology CAUTIONS 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. 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. Instantly Available PC technology enables the board to enter the ACPI S3 (Suspend-to- RAM) sleep state. While in the S3 sleep state, the computer will appear to be off. If the computer has a dual-colored power LED on the front panel, the sleep state is indicated by the LED turning amber. When signaled by a wake-up device or event, the computer quickly returns to its last known awake state. The Desktop Board supports the PCI Bus Power Management Interface Specification. Add-in cards that support this specification can participate in power management and can be used to wake the computer. +5 V Standby Power Indicator CAUTION If the AC power has been switched off and the standby power indicator is still lit, disconnect the power cord before installing or removing any devices connected to the board. Failure to do so could damage the board and any attached devices. Desktop Board Features The Desktop Board’s standby power indicator, shown in Figure 5, is lit when there is standby power still present on the board even when the computer appears to be off. For example, when this LED is lit, standby power is still present at the memory module sockets and the PCI bus connectors. Figure 5. Location of the Standby Power Indicator For more information on standby current requirements for the Desktop Board, refer to the Technical Product Specification at 1Wake from USB NOTE Wake from USB requires the use of a USB peripheral that supports Wake from USB and an operating system that supports Wake from USB. USB bus activity wakes the computer from an ACPI S3 state. Intel Desktop Board DX79SI Product Guide PME# Signal Wake-up Support When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S3, S4, or S5 state. WAKE# Signal Wake-up Support When the WAKE# signal on the PCI Express bus is asserted, the computer wakes from an ACPI S3, S4, or S5 state. Wake from Consumer IR Consumer IR device activity wakes the computer from an ACPI S3, S4, or S5 state. Onboard System Control Switches The board contains the following lighted button switches that can be used to control board operation: • Power • Reset Figure 6. Onboard System Control Switches Desktop Board Features Power Switch The power button switch (see Figure 6, A) can be used to turn the desktop board on or off. This power button switch behaves the same as a chassis power switch connected via the front panel header. The onboard power button switch does not remove standby power. To turn off the computer using the onboard power button switch, keep it pressed down for three seconds. Reset Switch The reset button switch (see Figure 6, B) can be used to reset the desktop board. This power button switch behaves the same as a chassis reset switch connected via the front panel header. When the reset button switch is pressed, the board resets and runs the POST. System Initialization/ Status LEDs The Desktop Board provides LEDs that allow you to monitor your system’s progress through initialization and the BIOS POST (see Figure 7). There are also other board status LEDs that allow you to monitor other system activities. Figure 7. Location of the Initialization/Status LEDs Intel Desktop Board DX79SI Product Guide System Initialization LEDs At initial power on, these eight diagnostic LEDs are off. When the BIOS starts an activity such as memory initialization, the corresponding LED starts flashing. Once the activity has completed, the LED will remain on. Table 4 lists the LEDs and describes their function. Table 4. System Initialization LEDs Activity Item/Callout in Figure 7 LED Color Description Watch Dog Timer Fire/ Back to BIOS K Red When the watch dog timer fires to reset the board, this LED will flash. In addition, this LED will light and stay on when the Back to ...