Product Description
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Wake on LAN technology and Instantly Available technology require power from the +5 V
standby line. The sections discussing these features describe the incremental standby power
requirements for each.
Resume on Ring enables telephony devices to access the computer when it is in a power-managed
state. The method used depends on the type of telephony device (external or internal) and the
power management mode being used (APM or ACPI).
✏
NOTE
The use of Resume on Ring, and Wake from USB technologies from an ACPI state requires an
operating system that provides full ACPI support.
1.13.2.1 Power Connector
When used with an ATX-compliant power supply that supports remote power on/off, the
D815EEA board can turn off the system power through software control. To enable soft-off
control in software, advanced power management must be enabled in the BIOS Setup program and
in the operating system. When the system BIOS receives the correct APM command from the
operating system, the BIOS turns off power to the computer.
With soft-off enabled, if power to the computer is interrupted by a power outage or a disconnected
power cord, when power resumes, 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 After Power Failure
feature in the BIOS Setup program’s Boot menu.
For information about Refer to
The location of the power connector Figure 10, page 59
The signal names of the power connector Table 35, page 61
The BIOS Setup program’s Boot menu Table 76, page 114
The ATX specification Section 1.3, page 16
1.13.2.2 Fan Connectors
The D815EEA board has three fan connectors. The functions of these connectors are described in
Table 11.
Table 11. Fan Connector Descriptions
Connector Function
System fan (fan 1) Provides +12 V DC for a system or chassis fan. The fan voltage can be switched
on or off, depending on the power management state of the computer. A
tachometer feedback connection is also provided.
Power supply fan
control (fan 2)
Provides +12 V DC for a system or chassis fan. The fan voltage can be switched
on or off, depending on the power management state of the computer. A
tachometer feedback connection is also provided.
Processor fan (fan 3) Provides +12 V DC for a processor fan or active fan heatsink.
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