Confidential and proprietary information of Extreme Networks. © 2011 Extreme Networks, Inc.
All rights reserved. DRAFT. October 20, 2011
Replacing DC Power Supplies in Summit Family Switches
Summit Family Switches Hardware Installation Guide
298
Replacing a Summit 450 W or 550 W DC Power
Supply
Summit 450 W DC power supplies are compatible with the Summit X480 series switches and with
Summit X670 series switches that have front-to-back ventilation airflow. The Summit 550 W DC power
supplies are compatible only with Summit X670 series switches. The 550 W DC power supplies are
available in versions for switches with either front-to-back or back-to-front airflow.
The Summit X480 and X670 switches have two bays for hot-swappable power supplies. In a redundant
power configuration, you can replace one Summit X480 DC power supply without powering down the
switch.
You need the following tools and materials to replace a Summit 450 W DC power supply:
● #1 Phillips screwdriver
● Torque screwdriver and wrench or torque driver with attachments for tightening screws and nuts
● Thermal protective gloves (required for removal of a power supply)
You cannot combine 450 W power supplies and 550 W power supplies in the same Summit X670
series switch.
Removing the Power Supply
The DC power supply may be hot to the touch; use thermal protective gloves when handling the power
supply during removal.
To remove an installed Summit 450 W OR 550 W DC power supply:
1 De-energize the DC circuit.
2 Disconnect the DC power cables as follows:
a Pull the cover off the terminal block.
b Loosen the screws that secure the cable terminals to the terminal block.
c Slide the wires out from under the captive washers.
Be sure to disconnect all power cables before you disconnect the chassis ground wire.
3 Disconnect the ground wire as follows:
a Loosen the screw that secures the ground wire to the terminal block.
b Slide the wire out from under the captive washer.
4 Note the orientation of the installed power supply.
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