Juniper EX4650 Series User Manual

5. Install the replacement fan.
6. Tighten the captive screws on the faceplate of the fan module by using your fingers. If you are unable
to tighten the captive screws by using your fingers, use the screwdriver.
Figure 46: Removing a Fan Module from an EX4650 Switch
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NOTE: Both the fan modules must be installed and operational for optimal functioning of the
switch.
Installing a Fan Module in an EX4650 Switch
EX4650 is shipped with redundant fans (4+1). Each fan module is a hot-removable and hot-insertable
field-replaceable unit (FRU) installed in the rear panel of the switch. You can remove and replace it without
powering off the switch or disrupting switch functions.
CAUTION: Do not mix:
•
Fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) 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.
•
AC and DC power supplies in the same chassis.
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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