D-Link DUB-H4 Quick Installation Manual page 3

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