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Cisco Catalyst 4900M Switch Installation Guide
78-18350-01
Chapter 2 Site Planning
Site Planning Checklist
• Examine your work area carefully for possible hazards such as moist floors,
ungrounded power extension cables, and missing safety grounds.

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage occurs when electronic cards or
components are improperly handled and can result in complete or intermittent
failures. Follow these guidelines to prevent ESD damage:
• Always use an ESD-preventive wrist or ankle strap, and ensure that it makes
maximum contact with the skin.
• When coming into contact with any internal components, always use a wrist
strap connected to one of the following:
–
ESD wrist strap connector
–
Any unpainted grounded surface on the chassis or equipment rack
Caution Periodically check the resistance value of the antistatic strap. The measurement
should be between 1 and 10 megohms (Mohms).
• Handle cards by the edges only.
• Avoid contact between the modules and clothing. The wrist strap protects
only the card from ESD voltages on the body; ESD voltages on clothing can
still cause damage.
Site Planning Checklist
Table 2-1 lists the site planning activities that you should perfo rm before you
install the Catalyst 4900M switch. Completing each activity helps to ensure a
successful switch installation.