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The SFP port and its corresponding 10/100/1000Base-T autosensing Ethernet port cannot be used
together at the same time. For details, refer to the Ethernet Port Configuration part in the Access
Volume of the 3Com Switch 4510G Family Configuration Guide.
LEDs
Table 1-5 LEDs
LED Device support
System Status LED All series
RPS Status LED All series
Port Mode LED All series
Seven-Segment LED All series
10/100/1000Base-T Auto-Sensing Ethernet Port Status LED All series
SFP Port Status LED All series
Interface Module Status LED All series
System Status LED
The system status LED helps you determine the working status of the switch. Refer to Table 1-6 for the
details.
Table 1-6 System status LED description
LED Status Description
Steady green The switch is started normally.
Flashing green (1 Hz) The system is performing power-on self test (POST).
Steady red POST failed.
Flashing yellow (1 Hz) POST on some ports failed.
PWR
Off The switch is powered off.
RPS Status LED
The RPS status LED helps you determine the working status of the RPS of the switch. Refer to Table
1-7 for details.