DFI-ITOX LT600-DR User Manual page 52

2
Hardware Installation
LED
Standby Power LED
This LED will light when the system is in the standby mode.
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Warning:
When the Standby Power LED lit red, it indicates that power is
present on the PCI slots. Power-off the PC then unplug the
power cord prior to installing any add-in cards. Failure to do so
will cause severe damage to the motherboard and components.
Standby
Power LED