61Table 13 System status LED descriptionLED mark Status DescriptionSYSSteady green The switch is operating properly.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 LEDA power module status LED shows how the hot swappable power module in a slot is operating.Table 14 Power module status LED descriptionLED mark Status DescriptionPWR1/PWR2Steady green A power module is installed in the power module slot, and thepower output is normal.Steady yellow A power module is installed in the power module slot, but thepower module has a problem or no power is being input.Off No power module is installed in the power module slot.Port mode LEDThe port mode LED indicates the type of information that the network port LEDs are showing. You can usethe port LED mode switching button to change the type of displayed port information.Table 15 Port mode LED descriptionLED mark Status DescriptionMODE/ModeSteady green The network port LEDs are showing port rates.Steady yellow The network port LEDs are showing duplex modes.Seven-segment LEDThe seven-segment LED, together with the system status LED, shows detailed system operating information(see Table 16).Table 16 Seven-segment LED descriptionSystem status LED(SYS) status Seven-segment LED (Unit) status DescriptionFlashing greenThe LED displays numbers one by one. POST is running, and the LED displaysthe ongoing test item ID.
