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Cisco Nexus 2000 Series Hardware Installation Guide
Chapter4 Installing a Cisco Nexus Fabric Extender
Removing and Installing Components
Step5 Place your other hand under the power supply to support it while you slide it out of the chassis. Place
the power supply on an antistatic surface.
Step6 If the power supply bay is to remain empty, install a blank power supply filler panel.
Installing a DC Power Supply
In a system with dual power supplies, connect each power supply to a separate power source. If a power
source failure occurs, the second source will most likely still be available.
Caution Be sure that the power supply that you are installing has the same airflow direction as the fan tray module
and the other power supply. Either all of the modules must have port-side exhaust airflow (blue or no
color on the front of the module) or all of the modules must have port-side intake airflow (red or black
color on the front of the module). To prevent over heating, the switch does not support more than one
airflow direction for the chassis.
To install a power supply, follow these steps:
Step1 Ensure that the system (earth) ground connection has been made for the chassis. For ground connection
instructions, see the “Grounding the System” section on page4-7.
Step2 If the power supply bay has a filler panel, push and hold the thumb latch to the left, and then slide the
filler panel out of the power supply bay.
Step3 Hold the replacement power supply by the handle and position it so that the thumb latch is on the right,
and then slide it into the power supply bay, ensuring that the power supply is fully seated in the bay.
Step4 Engage the thumb latch so that the power supply is firmly held in place in its slot.
Step5 Fasten the positive cable to the negative (-) terminal.
Step6 Fasten the negative cable to the positive (+) terminal.
Step7 Turn on the power at the circuit breaker.
Step8 Verify power supply operation by checking that the power supply LED is green. For information about
what the power supply LEDs indicate, see the “Power Supply Status” section on pageE-3.
Removing and Installing a FanThe Cisco Nexus 2300 Series FEXs support three fans, but the FEX needs only two fans for operation.
The other fan is for redundancy. Individual fans are designed to be removed and replaced while the
system is operating, without causing an electrical hazard or damage to the system.
If you are replacing a fan tray on a Cisco Nexus 2200 Series FEX, or Cisco Nexus 2148T FEX, see the
“Removing and Installing the Fan Tray” section on page4-21.