Juniper QFX5120 Series User Manual

Figure 12: Connect Power to an AC-Powered QFX5120-32C Switch
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Figure 13: Connect Power to an AC-Powered QFX5120-48Y or QFX5120-48T Switch
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6. If the AC power source outlet has a power switch, set it to the off position.
NOTE: The switch powers on as soon as power is provided to the power supply. There is no power switch
on the QFX5120.
7. Insert the power cord plug into an AC power source outlet.
8. If the AC power source outlet has a power switch, set it to the on position.
9. If you are connecting the power supply in a QFX5120-32C switch, verify that the LED on the power supply is lit
green. If the LED is lit or blinking red, disconnect the power supply from the power source, and replace the power
supply (see Remove a Power Supply from a QFX5120 Switch).
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If you are connecting the power supply in a QFX5120-48Y or QFX5120-48T switch, verify that the AC and DC LEDs
on the power supply are lit green. If the fault LED (!) is lit, disconnect the power supply from the power source, and
replace the power supply (see Remove a Power Supply from a QFX5120 Switch).
Do not remove the power supply until you have a replacement power supply ready: you must install the power supplies
or a cover in the switch to ensure proper airflow.
CAUTION: Replace a failed power supply with a cover or a new power supply within one minute
of removal to prevent chassis overheating.
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Juniper QFX5120 Series Specifications

General

Rack Units	1 U
Junos OS	Yes
Form Factor	Fixed
Power Supply	Dual, hot-swappable
Cooling	Front-to-back or back-to-front airflow
Fans	Hot-swappable
Operating Temperature	32°F to 104°F (0°C to 40°C)
Storage Temperature	-40°F to 158°F (-40°C to 70°C)
Humidity	5% to 90% non-condensing
AC Power Input	100 to 240 VAC
Management Ports	1x RJ-45 console, 1x USB, 1x RJ-45 management