Desktop Board Features
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 devices
―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
+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 4, is lit when there is standby power to the system. This includes the DIMM socket and the PCI bus connector, even though the computer appears to be off.
19
