Asus G74SXDH733D user manual Model, Microphone Input Jack, Headphone Output Jack

4	Optical Drive Activity Indicator (location varies by
	model)

The optical drive activity indicator shows when data is being transferred by the optical disk drive.This indicator will light in proportion to the data size transferred.

5 Optical Drive Electronic Eject

The optical drive eject has an electronic eject button for opening the tray.You can also eject the optical drive tray through any software player or by right clicking the optical drive in Windows “Computer” and selecting Eject.

6Optical Drive Emergency Eject (location varies by model)

The emergency eject is used to eject the optical drive tray in case the electronic eject does not work. Do not use the emergency eject in place of the electronic eject.

7 Microphone Input Jack

The mono microphone jack (1/8 inch) can be used to connect an external microphone or output signals from audio devices. Using this jack automatically disables the built-in microphone. Use this feature for video conferencing, voice narrations, or simple audio recordings.

8 Headphone Output Jack

The stereo headphone jack (1/8 inch) is used to connect the Notebook PC’s audio out signal to amplified speakers or headphones. Using this jack automatically disables the built-in speakers.

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