Dell Latitude 12 Rugged Extreme 7214 Owner's Manual page 17

CAUTION: EXPLOSION HAZARD—External connections (power adapter port, HDMI port, USB
ports, RJ45 port, serial ports, audio port, Smart Card reader slot, SD card reader slot, Express
Card reader slot, PC card reader slot, SIM card slot) should not to be used in a hazardous location.
WARNING: Do not block, push objects into, or allow dust to accumulate in the air vents. Do not
store your Dell computer in a low-airflow environment, such as a closed briefcase, while it is
running. Restricting the airflow can damage the computer. The computer turns on the fan when
the computer gets hot. Fan noise is normal and does not indicate a problem with the fan or the
computer.
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