3-17
Cisco Catalyst 4900M Switch Installation Guide
78-18350-02
Chapter 3 Installing the Switch
Configurable Modules
Warning
Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place.
Statement
1029
Installing Switching Modules
Warning
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into
beams or view directly with optical instruments.
Statement 1051
Warning
Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if
interconnections are made using uninsulated exposed metal contacts, conductors, or terminals.
Avoid using such interconnection methods, unless the exposed metal parts are located within a
restricted access location and users and service people who are authorized within the restricted
access location are made aware of the hazard. A restricted access area can be accessed only through
the use of a special tool, lock and key or other means of security.
Statement 1072
CautionTo prevent ESD damage, handle switching modules by the carrier edges only.
To install a switching module in a Catalyst 4900M series switch, perform the following steps:
Step 1Take the necessary precautions to prevent ESD damage as described in Appendix B and in Chapter 2.
Step 2Choose a slot for the new switching module. Ensure that you have enough clearance to accommodate
any interface equipment that you will connect directly to the switching module ports.
Step 3Loosen the captive installation screws that secure the switching-module filler plate (or the existing
switching module) to the desired slot.
Step 4Remove the switching-module filler plate (or the existing switching module). Save the switching-module
filler plate for future use. If you are removing an existing switching module, see the “Removing
Switching Modules” section on page 3-15.
Step 5To install the new switching module, grasp the switching-module front panel with one hand, and place
your other hand under the carrier to support the switching module, as shown in Figure 3-11. Do not touch
the printed circuit boards or connector pins.
Step 6Align the edges of the circuit board with the slot guides on the sides of the switch chassis, as shown in
Figure 3-11.