Table Of Contents

Preface

Organization

Conventions

Obtaining Documentation and Submitting a Service Request

Preface

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This guide provides you with the information needed to install and remove a power supply unit in a Cisco 4400 Series Wireless LAN Controller.

Organization

This guide is organized into the following sections:

•Collecting Required Tools and Supplies

•Installing the Cisco 4400 Series Power Supply

•Removing the Cisco 4400 Series Power Supply

Conventions

Notes, cautions, and timesavers use these conventions and symbols:

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Tip Means the following will help you solve a problem. The tips information might not be troubleshooting or even an action, but could be useful information.

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Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in this manual.

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Caution Means reader be careful. In this situation, you might do something that could result equipment damage or loss of data.

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Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents.

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Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS Version 2.0.