The enclosure should be designed so that the ambient air entering the system meets the operating temperature requirements of the system. The enclosure design should be designed to minimize the temperature increase of the air entering the system by:

Implementing enclosure venting that allows at least 30% airflow (front and back)

Implementing enclosure ventilation that aligns well with the system ventilation to allow direct airflow into the system. This is especially important at the exhaust of the system.

Ensuring that there is ventilation at the highest point of the enclosure (such as a gap between the door and top of the enclosure) to allow hot air to escape.

NOTICE: Do not install your computer in an enclosure that does not allow airflow. Restricting the airflow impacts your computer’s performance, possibly causing it to overheat.

If your computer is installed in a corner on a desk or under a desk, leave at least 5.1-cm (2-in) clearance from the front of the computer and at least 5.1 cm (2 in) from the back of the computer to the wall to permit the airflow required for proper ventilation.

Setting Up Your Computer

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Dell K080D manual Setting Up Your Computer