Asus ASUSPRO P2520SJ E-Manual page 18

Battery pack
The battery pack is automatically charged when your Notebook
PC is connected to a power source. When charged, the battery
pack supplies power to your Notebook PC.
Spring battery lock
The spring battery lock automatically locks the battery pack in
place once it is inserted into the battery slot.
IMPORTANT! This lock should be held in an unlocked position
when removing the battery pack.
Audio speakers
The built-in audio speaker allows you to hear audio straight from
the Notebook PC. The audio features of this Notebook PC are
software-controlled.
Manual battery lock
The manual battery lock is used to keep the battery pack
secured. This lock should be manually moved to a locked or
unlocked position to insert or remove the battery pack.
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.
18 Notebook PC E-Manual