Asus PN30 Manuel De L'utilisateur page 14

Rear view
14 PN30
HDMI port
The HDMI (High Definition Multimedia Interface) port
supports a Full-HD device such as an LCD TV or monitor to
allow viewing on a larger external display.
Air vents (exhaust vent)
The air vents allow your Mini PC chassis to expel hot air
out.
IMPORTANT: For an optimum heat dissipation and
air ventilation, ensure that the air vents are free
from obstructions.