• Operating humidity is from 5 to 90 percent non-condensing, continuous.• In a dry, clean, well-ventilated, and temperature-controlled room, away from heat sourcessuch as hot cooling vents or direct sunlight.• Away from sources of severe electromagnetic noise.• Positioned in a rack or cabinet, or on a desktop with adequate space in the front, back,and sides for proper ventilation and access.• Install the platform in Information Technology Rooms in accordance with Article 645 ofthe National Electrical Code and NFPA 75.For more information about platform storage and environmental temperatures, seeSpecifications.Cabinet placementInstall VEP4600 only in indoor cabinets designed for use in a controlled environment.Do not install the platform in outside cabinets. For cabinet placement requirements, see Siteselection.The cabinet must meet minimum size requirements. Airflow must be in accordance with theElectronic Industries Alliance (EIA) standard. Ensure that there is a minimum of 5 inches(12.7 cm) between the intake and exhaust vents and the cabinet wall.Rack mountingWhen you prepare your equipment rack, ensure that the rack is grounded. Ground theequipment rack to the same ground point the power service in your area uses. The groundpath must be permanent.System groundDell recommends grounding your system. Use VEP4600 in a CBN.Fans and airflowFan installation is done as part of the factory install based on stock keeping unit (SKU) type.VEP 4600 supports an AC normal fan unit with fan airflow from the I/O to the PSU.8 Site preparations