Supermicro SuperServer SSG-621E-ACR16H User Manual page 72

M.2 LED Indicators
Two M.2 LED indicators are located at LED4 and LED7 on the motherboard. When LED4 is
blinking, M.2-C1 functions normally, while LED7 is blinking, M.2-C2 functions properly.
Onboard Power LED
The Onboard Power LED is located at LEDPWR on the motherboard. When this LED is on,
the system power is on.
M.2 LED State
LED Color Definition
Green: Blinking M.2 device working
Onboard Power LED Indicator
LED Color Definition
System Power Off (power cable not
Off
connected)
Green System Power On
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Chapter 4: Motherboard Connections