Installation Guide

c. Open the clip and slip it over the barrel of the connector (see Figure 289).
Figure 289: Attaching the Power Cord Retainer
d. Snap the clip firmly around the connector.
7. Connect the other end of the power cord to an AC power outlet.
Warning
Always make sure that the source outlet is properly grounded before plugging the AC
power cord into the AC power supply.
To install a second power supply, repeat step 1 on page 352 through step 7.
Install a 450 W or 550 W Internal AC Power Supply
Some switches are shipped without installed power supplies. They accommodate one or two Summit
450 W or 550 W AC power supply units.
Summit 450 W AC power supplies are compatible with switches that have front-to-back ventilation
airflow. Summit 550 W AC power supplies are available for switches with either front-to-back or back-
to-front airflow.
Note
You cannot combine 450 W power supplies and 550 W power supplies in the same switch.
An AC power cord is not included with the AC power supply. You can purchase AC power cords for use
in the US and Canada from Extreme Networks or from your local supplier. The cord must meet the
requirements listed in Power Cord Requirements for AC-Powered Switches and AC Power Supplies on
page 653.
Before installing the power supply:
• Verify that the switch rack or chassis has been grounded.
• Verify that the
airflow direction for the power supply is the same as the airflow direction of the
installed fan modules in the switch.
Installing Switches
Installing Internal AC Power Supplies
Summit Family Hardware Installation Guide 355