Juniper EX4300 Series

Table 46: AC Power Supply LEDs in EX4300 Switches (Connued)
LED Color Descripon
Green The power supply is delivering power and is
funconing correctly.
Red The power supply has failed and must be
replaced.
NOTE: If the IN OK LED and the OUT OK LED are not lit green, either the AC power cord is not
installed properly or the power input voltage is not within normal operang range.
If the IN OK LED is lit green and the OUT OK LED is unlit or lit red, the AC power supply is
installed properly, but the power supply has an internal failure.
DC Power Supply in EX4300 Switches
IN THIS SECTION
Characteriscs of a DC Power Supply | 113
DC Power Supply Airow | 115
N+0 Redundancy Conguraon of DC Power Supplies | 115
N+N Redundancy Conguraon of DC Power Supplies | 117
The DC power supply in EX4300 switches is a hot-insertable and hot-removable eld-replaceable unit
(FRU): You can install it without powering o the switch or disrupng the switching funcon.
NOTE: EX4300-24T, EX4300-24P, EX4300-32F, EX4300-48T, EX4300-48T-AFI, EX4300-48P,
EX4300-48MP, and EX4300-48MP-S models do not support DC power. EX4300-24T-S,
112