Cisco 3825 Hardware Installation Guide - Page 304

Installing Expansion Modules on Cisco High-Density Extension Modules Chapter 28 Connecting Cisco High-Density Extension Modules Installing Expansion Modules on Cisco High-Density Extension Modules Expansion modules can be used to increase the number of ports supported on the high-density extension module. Note ESD straps should be worn when handling all modules, including during installation of expansion modules. An ESD wrist strap is shipped with the product. To install expansion modules, follow these steps: Step 1 Decide if the expansion board is going in the EM0 slot or EM1 slot. Note The EM0 slot is on the left, and the EM1 slot is on the right as you look at the face plate. Step 2 Step 3 Align the connectors on the underside of the expansion module with the connectors for the slot you plan to use on the network module. (See Figure 28-2.) Using gentle pressure, insert the connectors on the underside of the expansion module into the connectors on the network module. Tip Use the alignment pins on the network module brackets to guide the expansion module during installation. Note Press firmly on the expansion module until the board seats to ensure proper network connections. Caution For each expansion module, two mounting screws must be installed with 6-8 lbs-in (67.8 N-cm) of torque. Failure to properly secure the expansion module to the base module with two screws compromises product reliability. In the case of FXO ports, failure to properly tighten both mounting screws causes FXO ground-start outgoing call operation to fail. Step 4 Insert two screws from the hardware kit through the screw guides on the expansion module into the threaded holes on the network module brackets. 28-4 Cisco Network Modules Hardware Installation Guide OL-2485-20