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2 Regulatory Compliance and Safety Information for the Cisco Micro Hub
Safety Recommendations
• Wear safety glasses if you are working under any conditions that might be hazardous to your
eyes.
• Do not perform any action that creates a potential hazard to people or makes the equipment
unsafe.
Safety with Electricity
Follow these guidelines when working on equipment powered by electricity:
• Locate the emergency power-OFF switch for the room in which you are working. Then, if an
electrical accident occurs, you can act quickly to turn OFF the power.
• Disconnect all power by turning OFF the power and unplugging the power cord before:
— Installing or removing a chassis
— Working near power supplies
• Do not work alone if potentially hazardous conditions exist.
• Never assume that power is disconnected from a circuit; always check the circuit.
• Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, frayed power cords, and missing safety grounds.
• If an electrical accident occurs, proceed as follows:
— Use caution; do not become a victim yourself.
— Turn OFF power to the system.
— If possible, send another person to get medical aid. Otherwise, assess the condition of the
victim and then call for help.
— Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. ESD damage occurs when
electronic components are improperly handled and can result in complete or intermittent failures.
• Always follow ESD-prevention procedures when removing and replacing components. Ensure
that the chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap,
ensuring that it makes good skin contact. Connect the grounding clip to an unpainted surface of
the chassis frame to safely ground ESD voltages. To properly guard against ESD damage and
shocks, the wrist strap and cord must operate effectively. If no wrist strap is available, ground
yourself by touching the metal part of the chassis.
• For safety, periodically check the resistance value of the antistatic strap, which should be between
1 and 10 megohms (Mohms).