Asus P2M - Manual (Page 15)

LED projector E-Manual 15
HDMI/MHL port
This port is for the HDMI (High-Definition Multimedia Interface)
connector and also supports MHL (Mobile HI-Definition Link)
compatible devices. This port is HDCP compliant for HD DVD,
Blu-ray, and other protected content playback.
Air vents
The air vents allow cool air to enter and warm air to exit the LED
projector.
WARNING! Ensure that paper, books, clothing, cables, or other
objects do not block any of the air vents or else overheating
may occur.
*on selected models only