If the LED is not lit up, there must be something wrong and please

reference to Chapter 4 for quick trouble shooting.

Figure 2-4 Connecting to computers
2.3 LEDs interface overview

You can observe the LEDs status to see if the hub works fine. The

meanings of LEDs are summarized as Table 2-1.

LEDs Color Blink Indication Description
System Power Green Power on Power is on and works normally.
Indicators FAN Err. Yellow Blink Fan Error Fan inside is work abnormal.
Yellow Fan Fail Fan inside is fail.
10 Collision Yellow 10 Collision Collision in 10 Mbps segment
100 Collision Yellow 100 Collision Collision in 100 Mbps segment
10 Utilization Green/ Utilization Utilization ratio in 10 Mbps
Yellow ratio segment
100 UtilizationGreen/ Utilization Utilization ratio in 100 Mbps
Yellow ratio segment
Master Green Master Bridge function disabled 8/12
Slave Green Slave Bridge function enabled 8/12
Port Link/REC Green Link Port is linked.
Indicators Green Blink Receiving Receiving data in this port
100 Green 100 Mbps Run in 100 Mbps
Dark 10 Mbps Run in 10 Mbps
Table 2-1 LEDs definition
4
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