This guide provides an overview and description of the line modules (LMs), switch route processor (SRP) modules, switch fabric modules (SFMs), and input/output adapters (IOAs) available for the Juniper Networks E120 and E320 Broadband Services Routers.

| Note: A release may support multiple versions of a module or IOA. For information, see Software Compatibility in JunosE System Basics Configuration Guide, Chapter 6, Managing Modules.

Table 1 lists the modules and IOAs supported by the router.

This book also contains the following appendixes:

- IOA Protocol Support
- Module and Slot Combinations
- Module Name Cross-Reference Information
- Product Reclamation and Recycling Program

For more information about E120 routers, E320 routers, modules, and IOAs, refer to the following books:

- Module installation and maintenance—E120 and E320 Hardware Guide
- Managing routers—JunosE System Basics Configuration Guide
- Configuring modules—JunosE Link Layer Configuration Guide