Intel DX79SI Product Guide for Intel Desktop Board DX79SI - Page 25

Wake from USB, Location of the Standby Power Indicator

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Desktop Board Features The Desktop Board's standby power indicator, shown in Figure 5, is lit when there is standby power still present on the board even when the computer appears to be off. For example, when this LED is lit, standby power is still present at the memory module sockets and the PCI bus connectors. Figure 5. Location of the Standby Power Indicator For more information on standby current requirements for the Desktop Board, refer to the Technical Product Specification at http://www.intel.com/products/motherboard/index.htm 1 Wake from USB NOTE Wake from USB requires the use of a USB peripheral that supports Wake from USB and an operating system that supports Wake from USB. USB bus activity wakes the computer from an ACPI S3 state. 25

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Desktop Board Features
25
The Desktop Board’s standby power indicator, shown in Figure 5, is lit when there is
standby power still present on the board even when the computer appears to be off.
For example, when this LED is lit, standby power is still present at the memory module
sockets and the PCI bus connectors.
Figure 5.
Location of the Standby Power Indicator
For more information on standby current requirements for the Desktop Board, refer to
the Technical Product Specification at
1
Wake from USB
NOTE
Wake from USB requires the use of a USB peripheral that supports Wake from USB
and an operating system that supports Wake from USB.
USB bus activity wakes the computer from an ACPI S3 state.