LevelOne GSW-4870TGX - Manual (Page 21)

UNDERSTANDING LED INDICATORS
The front panel LEDs provides instant status feedback, and, helps
monitor and troubleshoot when needed.
Figure 5. LED indicators of the Switch
Power and System LEDs
POWER: Power Indicator
On : When the Power LED lights on, the Switch is receiving power.
Off : When the Power turns off or the power cord has improper connection.
SYSTEM: Management Indicator
Blinking : When the CPU is working, the System LED is blinking.
On/Off : The CPU is not working.
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