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Location and meaning of dual-port, 2-Gb MetroCluster adapter LEDs

You can check the LEDs on the adapter to learn whether the power is on, whether a signal has been acquired, or whether an error has occurred.

The following illustration shows the location of LEDs on a dual-port 2-Gb MetroCluster adapter:

One of two amber LEDs
One of two green LEDs
Port a
Port b
One of two transmitter ports
One of two receiver ports

The following table explains what the LEDs mean:

Green Amber Description
Off Off Power is off
On On Power is on
Off Blinking at half-second intervals Synchronization is lost
Off On Signal is acquired
On Off Adapter is online
Blinking at half-second intervals System error has occurred