Allied Telesis AT-MR908TX - Manual (Page 24)

Product Description
4
Light-emitting Diodes (LEDs)
Figure 2 shows the location of the LEDs on the front panel. This faceplate is
common to all AT-MR908TX models.
Figure 2: Front Panel LEDs
An array of light-emitting diodes (LEDs) enable performance monitoring and
failure analysis:
❑ A System Collision LED
❑ A Power LED
❑ Five network Utilization status LEDs
❑ Eight Link/Activity LEDs, one for each RJ45 port
❑ Eight Error detection LEDs, one for each RJ45 port
Front-panel LEDs help you monitor the status of each port. The two parallel
rows of eight Link/Activity LEDs and eight Error LEDs correspond with the 8
shielded RJ-45 ports on the back panel. The five Utilization LEDs indicate hub
traffic within the Fast Ethernet bandwidth. Two additional front panel LEDs
indicate power ON/OFF and collision detection.
Utilization (%) HUB STATUS
Utilization (%)
HUB STATUS Power ON/OFF
Utilization Error Detection
Link/Activity Collision Detection