Juniper EX4650 Series User Manual

Figure 25: Power supply handle detail
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1
1—AIR IN (AFI) label
Be sure to use the correct power supply for your chassis product SKU (see Table 20 on page 52).
CAUTION: Do not mix:
•
AC and DC power supplies in the same chassis.
•
Power supplies with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the
same chassis.
•
Power supplies and fan modules with different airflow labels (AIR IN (AFI) and AIR
OUT (AFO)) in the same chassis.
CAUTION: Verify that the airflow direction on the power supply handle matches the
direction of airflow in the chassis. Ensure that each power supply you install in the chassis
has the same airflow direction. If you install power supplies with two different airflow
directions, Junos OS raises an alarm. If you need to convert the airflow pattern on a
chassis, you must replace all the fans and power supplies at one time to use the new
direction.
Table 20 on page 52 lists the DC power supplies used in EX4650 switches and the direction of airflow in
them.
Table 20: Airflow direction in power supplies for EX4650 switches
Color of Power Supply HandleDirection of AirflowProduct Number
Juniper GoldFront to backJPSU-650W-DC-AFO
Juniper Azure BlueBack to frontJPSU-650W-DC-AFI
52

Juniper EX4650 Series Specifications

General

Cooling	Front-to-back or back-to-front airflow
Rack Units	1U
MAC address table size	288, 000 entries
Memory	16 GB
Storage	64 GB SSD
Power Supply	Dual redundant, hot-swappable
Junos OS	Supported
Jumbo frames	9216 bytes
Operating temperature	0°C to 40°C (32°F to 104°F)
Input voltage	AC: 100-240V
Fans	Hot-swappable, redundant
Operating humidity	5% to 90% (non-condensing)
Ports	48 x 10GbE SFP+/SFP28 ports 8 x 40GbE QSFP+/100GbE QSFP28 ports