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I/O Modules

Most line modules have a corresponding input/output (I/O) module that provides the physical interconnection to the network. Insert each I/O module into the back of the system, directly behind its corresponding line module.

For information about which line modules pair with which I/O modules, see the ERX Module Guide. See Figure 2, Figure 4, and Figure 6 for locations. For details about installing I/O modules, see Installing Modules.

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