Asus PU500CA - Manual (Page 18)

18 Notebook PC User Manual
Air vents
The air vents allow cool air to enter and warm air to exit the
Notebook PC.
WARNING! Ensure that paper, books, clothing, cables,
or other objects do not block any of the air vents or else
overheating may occur.
Audio speakers
The built-in audio speakers allow you to hear audio straight
from the Notebook PC. The audio features of this Notebook
PC are software-controlled.