32
Network Switch Installation Guide
QuantaMesh T3000 Series
Power Supply of T3048-LY5A
Equipped with two supply modules, the switch can operate with either one or two power supply
modules. If the switch uses two power supply modules, you can hot-swap one of the PSU during
the operations.
NOTE:
• Only one PSU is required to operate a fully loaded chassis.
There are two types of PSU. Each plug retainer is color-coded to indicate its airflow direction.
• Red: indicates front-to-back airflow.
• Blue: indicates back-to-front airflow.
PSU-2
PSU-1
FAN-3
FAN-2
FAN-1
750w
~AC
AC
DC
750w
~AC
AC
DC
Plug retainer
PSU LEDs
PSU handle
The AC power connector is a standard three-pronged connector. The switch automatically adjusts
its power setting to any supply voltage in the range from 100~240 VAC at 50~60 Hz.
NOTE:
• Verify that each module has the same airflow direction. Make sure the switch runs with all of its
power supply and fan tray modules taking in air from a cold aisle and exhausting air to the hot
aisle.
Understanding the PSU LED
LED Type
LED Color
Function
Warning
Amber
PSU power / Thermal / Fan is not functioning properly.
AC
Green
The AC power (AC IN 220 / 110V) is operating normally.
Off
The AC power (AC IN 220 / 110V) has failed.
DC
Green
The DC power (DC OUT +12V) is operating normally.
Off
The DC power (DC OUT +12V) has failed.
Airflow Direction
The switch ships with three fan modules and two AC power supplies. The direction of the airflow
varies depending on the color of the fan module handle/plug retainer.
• Red: indicates front-to-back airflow (air inlet module).
• Blue: indicates back-to-front airflow (air outlet module).
• Do not mix power supplies and fan modules with different airflow in the same
chassis.
CAUTION