User Manual

Chapter 3: Motherboard Information
3-8
3.4 Onboard LEDs
1. Diagnosis LEDs
The Diagnosis LEDs provide the status of these key components during POST (Power-
On-Self Test): CPU, memory modules, VGA card, and hard disk drives. If an error is
found, the critical component’s LED stays lit up until the problem is solved.
The Diagnosis LEDs provide the most probable cause of an error code as a starting point
for troubleshooting. The actual cause may vary from case to case.
2. Standby Power LED (SBPWR1)
The motherboard comes with a standby power LED. The green LED lights up to
indicate that the system is ON, in sleep mode, or in soft-off mode. This is a reminder
that you should shut down the system and unplug the power cable before removing or
plugging in any motherboard component. The illustration below shows the location of
the onboard LED.