Juniper EX4300 Series

You can install up to two DC power supplies in an EX4300 switch. Power supplies are installed in the
power supply slots labeled PSU 0 and PSU 1 in the rear panel of the chassis.
Table 47 on page 114 lists the details of the 550 W DC power supplies used in EX4300 switches.
Table 47: Details of the DC Power Supplies in EX4300 Switches
Details 550 W DC Power Supply
Model number
• JPSU-550-DC-AFO-A
• JPSU-550-DC-AFI-A
Field-replaceable unit (FRU) type Hot-insertable and hot-removable
Power supply weight 2.43 lb (1.1 kg)
Minimum installed in chassis 1
Maximum installed in chassis 2
Power supply slots Install in power supply slots labeled PSU 0 and PSU 1 in the rear
panel of the chassis.
Fans Internal
Airow
• Front-to-back, indicated by label AIR OUT (AFO)
• Back-to-front, indicated by label AIR IN (AFI)
Power supply status LEDs IN OK and OUT OK
DC input current rang 14.2 A
114