Allied Telesis AlliedView-EMS 4.0.3 Device-Management - Manual (Page 260)

AlliedView™-EMS 4.0.3 Device Management Guide Page 260 of 468
AT-9448Ts/XP
Device Manager LEDs for AT-9400 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.
DUPLEX Green
Orange
The port is operating in full-duplex mode.
The port is operating in half-duplex mode.
RPS Green
Gray
Yellow
An optional redundant power supply is connected to the switch
and is turned on.
There is no redundant power supply connected to the switch.
An optional redundant power supply is connected to the switch but
is turned off.
STACK ID Orange
Gray
Green
The stacked unit is either the Stacking Master or the Backup Master.
The switch is set to standalone mode.
The stacked unit is a slave switch.