Acer ALH-616ds User Manual page 18

There are three groups of LED indicators in the front panel:
• System status indicators: Indicate the overall system status of the hub.
It includes system PWR, Fan Err., Master, Slave indicators, Collision of
10 and 100M, and Bridge function
• Network status indicators: Indicate working status of each connection port,
It includes port 100/10M, LNK/ACT
• Network utilization indicators: Indicate the bandwidth utilization of 10 and
100Mbps. It includes 5, 15, 25, 35, 55+ scales indicators
2.4.2 System status indicators
PWR: Indicates if the system is provided with power.
Color
Green
Master/Slave: Indicates if the system is stacked to be the Master or Slave
Figure 2-14 System Status Indicators
On/Off
On
Off
FAN Err.: Indicates if the cooling FAN is dead.
Color On/Off
Orange On
Off
hub.
Indication
System Powered
No Power
Indication
FAN is dead
Normal