Chapter 1
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D-LED™ & D-Bracket™ (Optional)
The optional D-LED™ uses graphic signal display
to help users understand their system. Four LEDs embed-
ded in the mainboard provide up to 16 combinations of
signals to debug the system. The 4 LEDs can debug all
problems that fail the system, such as VGA, RAM or other
failures. This special feature is very useful for the
overclocking users. These users can use the feature to
detect if there are any problems or failures.
The D-Bracket™, which integrates four LEDs, is
optional. The definitions of D-Bracket™ LED signals are the same as D-
LED™.
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Diagnostic LED
D-LED D-Bracket Description
System Power ON
- The D-LED will hang here if the processor is damaged or
not installed properly.
Early Chipset Initialization
Memory Detection Test
- Testing onboard memory size. The D-LED will hang if
the memory module is damaged or not installed properly.
Decompressing BIOS image to RAM for fast booting.
Initializing Keyboard Controller.
Testing VGA BIOS
- This will start writing VGA sign-on message to the screen.
Red
Green
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