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AT-MR912TX Hub Installation Manual

Light-emitting Diodes (LEDs)

Figure 3 shows the front panel LEDs. This faceplate is common to all

AT-MR912TX models.

Figure 3: Front Panel LEDs

An array of light-emitting diodes (LEDs) enable performance monitoring and

failure analysis:

❑ System Collision

❑ Power

❑ Fiber Optic Module ON

❑ Five network Utilization status LEDs

❑ Twelve Link/Activity LEDs, one for each RJ45 port

❑ Twelve Error detection LEDs, one for each RJ45 port

The two parallel rows of twelve Link/Activity LEDs and twelve Error LEDs

correspond to the 12 shielded RJ-45 ports. Their purpose is to help you monitor

the status of each port

The ﬁve Utilization (%) LEDs indicate the percentage of hub trafﬁc within the

Fast Ethernet bandwidth.

Three additional front panel LEDs indicate power ON/OFF, 100Base-FX

Module ON and collision detection.

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