Asus X751L E-Manual page 18

Optical disc drive manual eject hole
The manual eject hole is used to eject the drive tray in case the
electronic eject button does not work.
WARNING! Use the manual eject hole only when the electronic
eject button does not work.
NOTE: For more details, refer to the Using the optical drive section
in this manual.
Power (DC) input port
Insert the bundled power adapter into this port to charge the
battery pack and supply power to your Notebook PC.
WARNING! The adapter may become warm to hot while in use.
Do not cover the adapter and keep it away from your body while
it is connected to a power source.
IMPORTANT! Use only the bundled power adapter to charge the
battery pack and supply power to your Notebook PC.
18 Notebook PC E-Manual