Allied Telesis AT-S102 - Manual (Page 190)

Chapter 6: Configuring the Media Converter Line Cards
190
3. Click the Edit button in the Low Power Mode section of the window.
4. To activate the low power mode on all the AT-CM3 Line Cards and to
turn off the LEDs, select Set All CM Line Cards to Low Power Mode
in the pop-up window. To disable the mode and turn on the LEDs,
select Return All CM Line Cards to Normal Mode.
5. To view the current low power mode settings on the line cards, click
the Display LPM for all line cards button. If the LPM setting for a line
card is ON, than the low power mode is active and the LEDs are off. If
the setting is off, the default setting, the low power mode is off and the
LEDs are on.