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LED Indicator Description
The DUB-H4 features five LED indicators…
The Power LED indicator is red and lights up when the DUB-H4 is
powered on by using the external power adapter. The DUB-H4 does not
run on power supplied from the computer (bus powered).
The downstream LED indicators are green. Each port has one status
LED. The LED lights to indicate that the port is working.
If a port becomes overloaded, a “current exceeded” event will take
place. The LED of the port will go off and the message “USB HUB
Current Limit Exceeded” appears on the monitor. Reset the DUB-H4 by
disconnecting it for 5 seconds and then powering it back on by connect-
ing the AC power adapter.
Power LED:
Red = Power is On
Off = Power is Off
Port 1-4 LED:
Green = Port is Active
Off = Port is Inactive