Power Management Features; Acpi; Hardware Support - Intel D2550MUD2 Product Manual

Power Management Features

Power management is implemented at several levels, including:
Software support through the Advanced Configuration and Power Interface (ACPI)
•
•

Hardware support:

― Power connector
― Fan header
― +5 V standby power indicator LED
― LAN Wake capabilities
― Instantly Available PC technology
― Wake from USB
― Wake from PS/2
― PME# wakeup support
― WAKE# signal wakeup support
― Wake from serial port

ACPI

ACPI gives the operating system direct control over the power management and Plug
and Play functions of a computer. The use of ACPI with the Desktop Board requires an
operating system that provides full ACPI support.
Hardware Support
Fan Header
The Desktop Board has a 3-pin system fan header. See Figure 13 on page 40 for the
location of the system fan header.
+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.
The Desktop Board's standby power indicator, shown in Figure 5, is lit when there is
standby power to the system. This includes the SO-DIMM sockets and the PCI bus
connector, even though the computer appears to be off.
Desktop Board Features
21