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Instruções de Operação Intel, Modelo Intel® Desktop Board DH61BF

Fabricante : Intel
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• USB ports are turned off during S4/S5 states. NOTE NOTE The use of these wake-up events from an ACPI state requires an operating system that provides full ACPI support. In addition, software, drivers, and peripherals must fully support ACPI wake events. 1.15.2 Hardware Support CAUTION Ensure that the power supply provides adequate +5 V standby current if LAN wake capabilities and Instantly Available PC technology features are used. Failure to do so can damage the power supply. The total amount of standby current required depends on the wake devices supported and manufacturing options. The board provides several power management hardware features, including: • Power connector • Fan headers • LAN wake capabilities • Instantly Available PC technology • Wake from USB • WAKE# signal wake-up support • Wake from serial port • Wake from PS/2 • Wake from S5 LAN wake capabilities and Instantly Available PC technology require power from the +5 V standby line. NOTE NOTE The use of Wake from USB from an ACPI state requires an operating system that provides full ACPI support. 1.15.2.1 Power Connector ATX12V-compliant power supplies can turn off the system power through system control. When an ACPI-enabled system receives the correct command, the power supply removes all non-standby voltages. When resuming from an AC power failure, the computer returns to the power state it was in before power was interrupted (on or off). The computer’s response can be set using the Last Power State feature in the BIOS Setup program’s Boot menu. For information about Refer to The location of the main power connector Figure 9, page 39 The signal names of the main power connector Table 18, page 43 1.15.2.2 Fan Headers The function/operation of the fan headers is as follows: • The fans are on when the board is in the S0 state • The fans are off when the board is in the S3, S4, or S5 state • Each fan header is wired to a fan tachometer input of the hardware monitoring and fan control ASIC • All fan headers support closed-loop fan control that can adjust the fan speed or switch the fan on or off as needed • All fan headers have a +12 V DC connection • 4-pin fan headers are controlled by Pulse Width Modulation For information about Refer to The location of the fan headers Figure 9, page 39 The location of the fan headers and sensors for thermal monitoring Figure 6, page 26 1.15.2.3 LAN Wake Capabilities CAUTION For LAN wake capabilities, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby current when implementing LAN wake capabilities can damage the power supply. LAN wake capabilities enable remote wake-up of the computer through a network. The LAN subsystem monitors network traffic at the Media Independent Interface. Upon detecting a Magic Packet* frame, the LAN subsystem asserts a wake-up signal that powers up the computer. 1.15.2.4 Instantly Available PC Technology CAUTION For Instantly Available PC technology, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby current when implementing Instantly Available PC technology can damage the power supply. 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 (the power supply is off and the front panel power LED will behave as configured by the BIOS “S3 State Indicator” option). When signaled by a wake-up device or event, the system quickly returns to its last known wake state. Table 8 on page 30 lists the devices and events that can wake the computer from the S3 state. The board supports the PCI Bus Power Management Interface Specification. Add-in boards that also support this specification can participate in power management and can be used to wake the computer. The use of Instantly Available PC technology requires operating system support and PCI 2.2 compliant add-in cards, PCI Express add-in cards, and drivers. 1.15.2.5 Wake from USB USB bus activity wakes the computer from an ACPI S3 state. NOTE NOTE Wake from USB requires the use of a USB peripheral that supports Wake from USB and is supported by the operating system. 1.15.2.6 WAKE# Signal Wake-up Support When the WAKE# signal on a PCI Express add-in card is asserted, the computer wakes from an ACPI S3, S4, or S5 state. 1.15.2.7 Wake from Serial Port Serial port activity wakes the computer from an ACPI S3 state. 1.15.2.8 Wake from PS/2 Devices PS/2 device activity wakes the computer from an ACPI S3, S4, or S5 state. However, when the computer is in an S4 or S5 state, the only PS/2 activity that will wake the computer is the alt-PrtScrn key combination on the keyboard. 1.15.2.9 Wake from S5 When the RTC Date and Time is set in the BIOS, the computer will automatically wake from an ACPI S5 state. 2 Technical Reference 2.1 Memory Resources 2.1.1 Addressable M...


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