Allied Telesis AlliedView-EMS 4.0.1 DEVICE MANAGEMENT - Manual (Page 283)

AT-9924Ts
Device Manager LEDs for AT-9900/AT-9900s Series
LED State Description
PWR 1 and
PWR 2 Green
Gray
Red
There is a power supply unit (PSU) in the PSU bay, and it is
supplying power to the switch.
There is a functioning Fan Only Module (FOM) in the PSU bay.
Either:
- there is no PSU or FOM in the PSU bay, or
- a PSU is installed but has a power supply or fan fault, or its
temperature has exceeded its recommended threshold, or
- an FOM is installed and a fan has failed.
Note - No FOM is OK for AT-9924T and AT-9924SP.
DUPLEX Green
Orange
Gray
The port is operating at full duplex.
The port is operating at half duplex.
The port has no link.
Note - Please refer to Uplink Modules for the operations and behavior of the Expansion
Modules installed on these devices.
AlliedView™-EMS 4.0.1 Device Management Guide Page 283 of 411