1 Introduction

This chapter introduces you to the:

3Com ONline™ Ethernet Port-Switching 10BASE-FB Modules (5102M-FBP and 5104M-FBP)

3Com ONline™ Ethernet 10BASE-FB Module (5104M-FB1)

The modules are referred throughout this guide as the 10BASE-FB Modules. Information in this guide refers to all three 10BASE-FB Modules listed above. Differences between the modules are noted where applicable.

This chapter contains the following sections:

10BASE-FB Module Descriptions

10BASE-FB Compliance

10BASE-FB Theory of Operation

Compatibility With Other Ethernet Fiber Products

Introduction 1 - 1

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3Com 5104M-FB1, 5102M-FBP, 510M-FBP installation and operation guide Introduction