Ez Debug Led; Led_Sw1: Ez Led Control; Jpwrled1: Led Power Input - MSI MPG B550 GAMING CARBON WIFI Quick Start Manual

EZ Debug LED

These LEDs indicate the debug status of the motherboard.
BAT1

LED_SW1: EZ LED Control

This switch is used to switch on/ off all the LEDs of motherboard.
BAT1

JPWRLED1: LED power input

This connector is used by retailers to demonstrate onboard LED lights.
BAT1
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Overview of Components
CPU - indicates CPU is not detected or fail.
DRAM - indicates DRAM is not detected or fail.
VGA - indicates GPU/ PCIE/ M.2 device is not detected
or fail.
BOOT - indicates the booting device is not detected
or fail.
LED_OFF
JPWRLED1 - LED power input
LED_ON
(Default)