Intel DH55PJ

Intel Desktop Board DH55PJ Technical Product Specification
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1.15.2.9 Wake from Serial Port
Serial port activity wakes the computer from an ACPI S1 or S3 state.
1.15.2.10 +5 V Standby Power Indicator LED
The +5 V standby power indicator LED shows that power is still present even when the
computer appears to be off. Figure 7 shows the location of the standby power
indicator LED on the board.
Figure 7. Location of the Standby Power LED
CAUTION
If AC power has been switched off and the standby power indicators are 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.