11Table 8 System status LED descriptionLED mark Status DescriptionSYSSteady green The switch is operating correctly.Flashing green (1 Hz) The switch is performing power-on self test (POST).Steady red POST has failed.Flashing yellow (1 Hz) Some ports have failed to pass POST.Off The switch is powered off.Power module status LEDsThe S5820X-28S and S5820X-28C switches have one status LED for each power module slot to show theavailability and operating status of the hot swappable power modules in the slots.Table 9 Power module status LED descriptionLED mark Status DescriptionPWR1Steady green A power module is installed in power module slot 1, and the poweroutput is normal.Steady yellow A power module is installed in power module slot 1, but the powermodule has an output problem.Off No power module is installed in power module slot 1, or no poweris being input.PWR2Steady green A power module is installed in power module slot 2, and the poweroutput is normal.Steady yellow A power module is installed in power module slot 2, but the powermodule has an output problem.Off No power module is installed in power module slot 2, or no poweris input.Seven-segment LEDThe seven-segment LED, together with the system status LED, shows detailed system operatinginformation.Table 10 Seven-segment LED descriptionSystem statusLED (SYS) status Seven-segment LED (Unit) status DescriptionFlashing greenThe LED displays numbers one by one. POST is running, and the LED displays theongoing test item ID.Flashing redThe LED displays flashing numbers. POST has failed, and the LED flashes the IDof the failed test item.
