Asus G46VW - Manual (Page 19)

Notebook PC E-Manual 19
Mini DisplayPort/Thunderbolt port (varies by model)
Use a Thunderbolt adapter to connect your Notebook PC to a
DisplayPort, VGA, DVI, or HDMI external display and experience
high-resolution display features via Intel® Thunderbolt™
technology.
Microphone
The built-in microphone can be used for video conferencing,
voice narrations, or simple audio recording.
Headphone output and S/PDIF output combo jack port
This port allows you to connect your Notebook PC to amplified
speakers or headphones. You can also use this port to connect
your Notebook PC to Sony/Philips Digital Interconnect Format
(S/PDIF) compliant devices.