• Prevention of Electrostatic Discharge Damage on J-EX Series Switches on page 186• AC Power Supply in J-EX4500 Switches on page 21Environmental Requirements and Specifications for J-EX Series SwitchesThe switch must be installed in a rack or cabinet housed in a dry, clean, well-ventilated,and temperature-controlled environment.Ensure that these environmental guidelines are followed:• The site must be as dust-free as possible, because dust can clog air intake vents andfilters, reducing the efficiency of the switch cooling system.• Maintain ambient airflow for normal switch operation. If the airflow is blocked orrestricted, or if the intake air is too warm, the switch might overheat, leading to theswitch temperature monitor shutting down the switch to protect the hardwarecomponents.Table 23 on page 56 provides the required environmental conditions for normal switchoperation.Table 23: J-EX Series Switch Environmental TolerancesToleranceDescriptionNo performance degradation to 10,000 ft (3048 m)AltitudeNormal operation ensured in relative humidity range of 10% through85%, noncondensingRelative humidityNormal operation ensured in temperature range of 32° F through113° F (0° C through 45° C)TemperatureComplies with Zone 4 earthquake requirements as per GR-63,Issue 3.SeismicNOTE: Install J-EX Series switches only in restricted areas, such as dedicatedequipment rooms and equipment closets, in accordance with Articles 110–16,110–17, and 110–18 of the National Electrical Code, ANSI/NFPA 70.RelatedDocumentationClearance Requirements for Airflow and Hardware Maintenance for J-EX4500 Switcheson page 60•56Dell PowerConnect J-Series J-EX4500 Ethernet Switch Hardware Guide
