Cisco WS-C3750-24PS-E Hardware Installation Guide - Page 63
lightning activity., Do not work on the system or connect or disconnect cables during periods
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Chapter 3 Switch Installation Preparing for Installation Warning To prevent the switch from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 113° F (45° C). To prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings. Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Warning Ultimate disposal of this product should be handled according to all national laws and regulations. Warning Attach only the Cisco RPS (model PWR675-AC-RPS-N1) to the RPS receptacle. Warning Class 1 laser product Warning Avoid exposure to the laser beam. 78-15136-02 Catalyst 3750 Switch Hardware Installation Guide 3-3