Owner's manual

AlliedView™-EMS 3.10 Device Management Guide Page 176 of 367
AT-8550GB
AT-8550SP
Device Manager LEDs for AT-8500 Series
LED State Description
PWR Green The switch is receiving power.
MASTER Orange
Gray
The switch is the master switch of an enhanced stack.
The switch is a slave switch or is not a member of an enhanced
stack.