Intel Desktop Board DH55TC Product Guide
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PCI Express WAKE# Signal Wake-up Support
When the WAKE# signal on a PCI Express bus add-in card is asserted, the computer
wakes from an ACPI S1, S3, S4, or S5 state.
Wake from PS/2 Devices
PS/2 device activity can wake the computer from an ACPI S1, S3, S4, or S5 state.
When the computer is in the S4 state, any key can be used to wake the computer
provided a supported operating system is installed. When the computer is in the S5
state, the only PS/2 activity that will wake the computer is either the Alt-Print Screen
key combination or the “Power” key that is available on some keyboards. The BIOS
can be used to select between either of the key combinations.
Wake from Serial Port
Serial port activity wakes the computer from an ACPI S1 or S3 state.
ENERGY STAR*, e-Standby, and ErP Compliance
The US Department of Energy and the US Environmental Protection Agency have
continually revised the ENERGY STAR requirements. Intel has worked directly with
these two governmental agencies in the definition of the new requirements.
Intel Desktop Board DH55TC meets the following program requirements in an
adequate system configuration, including appropriate selection of an efficient power
supply:
• Energy Star v5.0, category A
• EPEAT “Eco-Smart”
• Korea E-Standby
• European Union ErP
For information about ENERGY STAR requirements and recommended configurations,
go to http://www.intel.com/go/energystar
.
Speaker
A piezoelectric speaker is mounted on the Desktop Board. The speaker provides
audible error code (beep code) information during the Power-On Self-Test (POST).
Refer to Appendix A for a description of the board’s beep codes.
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