Allied Telesis AT-MR912TX - Manual (Page 25)

AT-MR912TX Hub Installation Manual
5
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.