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3-15
Cisco Catalyst 4900M Switch Installation Guid e
78-18350-02
Chapter 3 Installing the Switch
Configurable Modules
Required Tools
You will need these tools to install switching modules in the Catalyst 4900M series switches:
• Number 1 and number 2 Phillips screwdrivers for the captive installation screws
• 3/16-inch flat-blade screwdriver for the captive installation screws
• Antistatic mat or antistatic foam
• Wrist strap or other grounding device
Note Whenever you handle switching modules, use a wrist strap or other grounding device to prevent ESD
damage.
Removing Switching Modules
Wa r ni n g
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into
beams or view directly with optical instruments.
Statement 1051
Wa r ni n g
Hazardous volt age or energy is p resent on th e backp lane when the system is o perating. Use caution
when ser vic ing.
Statement 1034
Wa r ni n g
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
restr icted access location and user s and service peopl e who a re authorized within the res tricted
access loc ation are made aware of the hazard. A restricted access ar ea can be ac cessed only thr ough
the use of a special tool, lock and key or other means of security.
Statement 1072
Caution To prevent ESD damage, handle switching modules by the carrier edges only.

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