Only trained service personnel should perform service to Extreme Networks switches and their
components. Trained service personnel have read all related installation manuals, have the technical
training and experience necessary to be aware of the hazards to which they are exposed in performing a
task, and are aware of measures to minimize the danger to themselves or other persons.

Before installing an Extreme Networks PSU into your network:

●

Read the latest installation and safety information provided in this chapter and in

Appendix

A, “Safety Information.”

●

See

Appendix A, “Safety Information”

for additional information regarding regulatory compliance

certifications.

NOTE

For central DC power connections, the 1200 W DC PSU and 325 W DC PSU are intended to be installed only in
restricted access locations (dedicated equipment rooms, equipment closets, or the like) in accordance with Articles
110-16, 110-17, and 110-18 of the National Electric Code, ANSI/NFPA-70. All wiring methods involving the DC
input cable assembly must be performed according to the relevant articles of the National Electrical Code.

CAUTION

Building codes vary worldwide; therefore, Extreme Networks strongly recommends that you consult an electrical
contractor to ensure proper equipment grounding and power distribution for your specific installation.

WARNING!

Field operators must not attempt to open the PSU enclosure for any reason; the PSU does not contain
user-serviceable parts. In the event of failure, return the defective PSU to Extreme Networks for repair or
replacement.