Intel DZ77SL-50K Technical Product Specification - Page 38
PME# Signal Wake-up Support - specs
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Intel Desktop Board DZ77SL-50K Technical Product Specification 1.11.2.5 Wake from USB USB bus activity wakes the computer from an ACPI S3 state. NOTE Wake from USB requires the use of a USB peripheral that supports Wake from USB. 1.11.2.6 PME# Signal Wake-up Support When the PME# signal on the Conventional PCI bus is asserted, the computer wakes from an ACPI S3, S4, or S5 state (with Wake on PME enabled in the BIOS). 1.11.2.7 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. 1.11.2.8 Wake from PS/2 Devices PS/2 keyboard activity wakes the computer from an ACPI S3, S4, or S5 state. However, when the computer is in an ACPI S4 or S5 state, the only PS/2 activity that will wake the computer is the Alt + Print Screen or the Power Key available only on some keyboards. 1.11.2.9 Wake from Consumer IR CIR activity wakes the computer from an ACPI S3, S4, or S5 state. 1.11.2.10 Wake from S5 When the RTC Date and Time is set in the BIOS, the computer will automatically wake from an ACPI S5 state. 1.11.2.11 Power Supervisor The Power Supervisor actively monitors the input voltages from the power supply and protects the board and any attached peripherals from electrical overstress and possible physical damage. The Power Supervisor will activate if it detects the power supply voltage rails have deviated outside the current ATX power supply specification and safe operating levels. If the Power Supervisor detects an out of spec voltage, the following will happen: 1. The board will be powered down immediately to protect circuits from electrical overstress and possible physical damage. 2. A red warning LED (see Figure 1, FF) on the board will activate as a visual cue. 3. During the next power on, a message will be displayed on the screen to notify the user that the power supply voltage rails have deviated outside the current ATX power supply specification and safe operating levels. 4. A message will be added to the BIOS Event Log for each event that takes place until the BIOS Event Log is cleared. 38