Express Ethernet Switch
The following figures illustrate the LED and functions of LB9021A, LB9022A, LB9006A-ST, LB9006A-SC,
LB9008A-FO.
Figure 13: Left front panel of LB9021A, LB9022A, LB9006A-ST, LB9006A-SC, LB9008A-FO.
Figure 14: Port status display LEDs of LB9021A, LB9022A, LB9006A-ST, LB9006A-SC, LB9008A-FO.
Power
This LED illuminates when the switch is connected to a power supply and turned on.
Uplink Status
This LED illuminates when the uplink button is pressed down. There is no need for uplink function on 8-port fiber
switch.
Port Utilization
The Port Utilization LEDs indicates how much traffic each port is handling, measured as a percentage of the port's
bandwidth. Column 1 corresponds to Port 1, Column 2 to Port 2, Column 3 to Port 3, etc. As traffic on a port
increases, the LEDs for its column will light progressively from bottom to top.
Fiber Port Status
Three LEDs convey the status of each fiber port as detailed on the following chart.
18
Power
Uplink
8X
7X
10/100
BASE
UPLINK
LINK
TX
RX
100
FDX
COL
LINK
TX
RX
100
FDX
COL
NORMAL
UPLINK
LNK
ACT
FDX
LNK
ACT
FDX
FX3
FX1
RX TX
RX TX
FX2
RX TX
HDX
FDX
1 2
HDX
HDX
FDX
FDX
FX4
3 4
RX TX
FX5
FX6
5 6
RX TX
RX TX
