OptiPlex XE Technical Guidebook Page 36Chassis Enclosure & Ventilation RequirementsEnclosure VentilationIf your enclosure has doors, they need to be of a type that allows at least 30%airflow through the enclosure (front and back).Enclosure Minimum ClearanceLeave a 10.2 cm (4 in.) minimum clearance on all vented sides of the computerto permit the airflow required for proper ventilation.Recommended EnclosureDo not install your computer in an enclosure that does not allow airflow.This restricts the airflow and impacts your computer’s performance,possibly causing it to overheat.Open Desk Minimum ClearanceIf your computer is installed in a corner, on a desk, or under a desk, leave atleast 5.1 cm (2 in.) clearance from the back of the computer to the wall topermit the airflow required for proper ventilation.Regul a to ry Co mpl ia n ce and E nv iro nm en t alProduct related conformity assessment and regulatory authorizations including Product Safety,Electromagnetic Compatibility (EMC), Ergonomics, Communication Devices relevant to this product, alongwith additional product related conformity assessment, and information encompassing Environmental, EnergyConsumption, Noise Emissions, Product Materials Information, Packaging, Batteries, and Recycling relevant tothis product may be viewed in the Regulatory and Environmental Datasheet for this product is located at:http://www.dell.com/content/topics/global.aspx/about_dell/values/regulatory_compliance/dec_conform?c=us&l=en&s=corp&~ck=anavmlDetails of Dell's environmental stewardship program to conserve product energy consumption, reduce oreliminate materials for disposal, prolong product life span and provide effective and convenient equipmentrecovery solutions may be viewed at www.dell.com/earth by clicking the Design for Environment link on thewebpage.