Asus WS C246M PRO User Manual - Page 24
Onboard LEDs, Diagnosis LEDs, Standby Power LED SBPWR1 - test
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Chapter 1 1.1.8 Onboard LEDs 1. Diagnosis LEDs The Diagnosis LEDs provide the status of these key components during POST (PowerOn-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. 1-12 Chapter 1: Product Introduction