Part 1: Install A Power Supply - Juniper QFX5120 Quick Start Manual

QFX5120 Switch Quick Start Guide
To connect the switch to earth ground, you need:
A grounding cable (minimum 12 AWG (2.5 mm²), minimum 90° C wire, or as permitted by the local code), a grounding lug
(Panduit LCD10-10A-L or equivalent), a pair of 10-32 x .25-in. screws with #10 split-lock washers, and a pair of #10 flat
washers—none provided
To connect power to the switch, you need:
For models that are powered by AC power—An AC power cord with a plug appropriate for your geographical location, and a
power cord retainer
For models that are powered by DC power—DC power source cables (12 AWG—not provided) with ring lugs (Molex 190700069
or equivalent—not provided) attached
To perform initial configuration of the switch, you need:
An Ethernet cable with an RJ-45 connector attached—provided
An RJ-45 to DB-9 serial port adapter—provided
A management host, such as a PC, with an Ethernet port—not provided
Register product serial numbers on the Juniper Networks website and update the installation base data if there is any addition
or change to the installation base or if the installation base is moved. Juniper Networks will not be held accountable for not
meeting the hardware replacement service-level agreement for products that do not have registered serial numbers or accurate
installation base data.
Register your product at https://tools.juniper.net/svcreg/SRegSerialNum.jsp
Update your install base at
The fan modules and the power supplies in the QFX5120 switches are hot-removable and hot-insertable field-replaceable units
(FRUs) installed in the rear panel of the switch. You can remove and replace them without powering off the switch or disrupting
switch functions.
CAUTION:
Do not mix:
AC and DC power supplies in the same chassis.
Power supplies and fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.
WARNING: Ensure that you understand how to prevent ESD damage. Wrap and fasten one end of an ESD wrist strap
around your bare wrist, and connect the other end of the strap to the ESD point on the switch.
NOTE: Power supplies and fan modules must have same airflow direction (all AFI or all AFO). The AIR IN (AFI) or
AIR OUT (AFO) labels, respectively, on the power supplies and must match with the AIR IN (AFI) or AIR OUT (AFO)
labels respectively on the fan modules.

Part 1: Install a Power Supply

NOTE: Each power supply must be connected to a dedicated power source outlet. The power supply slots are on
the rear panel.
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https://www.juniper.net/customers/csc/management/updateinstallbase.jsp
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