1-10 
LEDs 
Table 1-5 LEDs 
LED  Device support  Description 
Power LED  All series  See “Power LED” on page 1-10.
 
RPS status LED 
3Com Baseline Switch 
2928-HPWR Plus 
See “
RPS Status LED” on page 
1-10. 
Port mode LED 
3Com Baseline Switch 
2928-PWR Plus and 3Com 
Baseline Switch 2928-HPWR 
Plus 
See “Port Mode LED” on page 1-11.
10/100/1000Base-T 
auto-sensing Ethernet 
port status LED 
All series 
See “10/100/1000Base-T 
Auto-Sensing Ethernet Port Status
 
LED
” on page 1-11 
1000Base-X SFP 
interface status LED 
All series 
See “1000Base-X SFP Interface 
Status LED
” on page1-13.
 
 
Power LED 
The power LED indicates the operation status of the switch.  
Table 1-6 Description of the power LED 
LED  Status  Description 
Solid green  The switch functions normally. 
Blinking green (1 Hz) 
The system is performing power-on self test (POST) or 
downloading software. 
Blinking green (3 Hz) 
The POST has failed or another fatal error has been 
detected. 
Power 
Off  The switch has been powered off. 
 
RPS Status LED 
The 3Com Baseline Switch 2928-HPWR Plus provides an RPS status LED on its front panel, indicating 
the working status of the RPS of the switch.  
Table 1-7 Description of the RPS status LED 
LED  Status  Description 
Solid green  The RPS DC input is normal. 
RPS 
Off 
The RPS unit is not connected or the RPS DC input is 
abnormal.