Installation guide

BlackDiamond 20808 Power Supplies
BlackDiamond 20808 Switch Hardware Installation Guide
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Figure 7: 2500 W AC PSU
Each 2400 W AC PSU contains two cooling fans at the right of the unit. Airflow enters from the right
side vents on the PSU and exits out the left side vents of the switch. Airflow through the PSU is
independent from the airflow through the rest of the switch.
For information about installing the 2300 W AC PSU, see Chapter 4.
LEDs
The Extreme Networks 2400 W AC PSU has status LEDs on the front panel. Table 7 describes the
meanings of the LEDs.
Table 7: LEDs on the 2400 W AC PSU
LED Type and Color
PSU Condition
AC OK
Green
DC OK
Green
Alarm
Red
Power supply outputs working normally On On Off
AC input power present On Off Off
No input power to this PSU only
(receiving standby power from the chassis)
Off Off On
No input power to any PSU Off Off Off
Power supply failure On Off On
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