• Cabling is away from sources of electrical noise, such as radios, power lines, and fluorescent
lighting fixtures. Make sure the cabling is safely away from other devices that might damage the
cables.
• Airflow around the switch and through the vents is unrestricted.
• Temperature around the unit does not exceed 113°F (45°C). If the switch is installed in a closed
or multirack assembly, the temperature around it might be greater than normal room temperature.
• For copper connections on Ethernet ports, cable lengths from the switch to connected devices can
be up to 328 feet (100 meters).
• For cable lengths for X2 transceiver modules and SFP-module connections, see the hardware
installation guide on Cisco.com and the documentation that shipped with the module.
Installation Warning Statements
This section includes the basic installation warning statements. Translations of these warning
statements appear in the Regulatory Compliance and Safety Information for the Catalyst 3750-E and
Catalyst 3560-E Switch guide.
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.
Statement 17B
Warning
Do not reach into a vacant slot or chassis while you install or remove a module or a fan.
Exposed circuitry could constitute an energy hazard. Statement 206
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