3Com 3C780 User Guide - Page 49

Keys for Fiber Port Modules

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Installing the Hub 2-9 4. Carefully slide the battery into its circular holder. Ensure that the "+" sign on the battery faces up and makes contact with the positive clip that holds the battery in place. The management module is now ready to be installed in slot 0. Follow the instructions given in the section "Installing Modules" later in this chapter. To remove the battery for replacement, reverse the procedure above. Keys for Fiber Port Modules Four sets of media port module keys, packaged in small plastic bags, are included with each fiber port module. Use the keys to specify the port configuration of each fiber-optic transceiver. The keys are identified as A, B, S, or M port types, as shown in Figure 2-4. Figure 2-4. Media Module Keys Identified by Port Type

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2-9
Installing the Hub
4.
Carefully slide the battery into its circular holder.
Ensure that the “+” sign on the battery faces up and makes contact with the
positive clip that holds the battery in place.
The management module is now ready to be installed in slot 0.
Follow the
instructions given in the section “Installing Modules” later in this chapter.
To remove the battery for replacement, reverse the procedure above.
Keys for Fiber Port Modules
Four sets of media port module keys, packaged in small plastic bags, are
included with each fiber port module.
Use the keys to specify the port
configuration of each fiber-optic transceiver.
The keys are identified as A, B, S,
or M port types, as shown in Figure 2-4.
Figure 2-4.
Media Module Keys Identified by Port Type