Asus VivoTab RT - Manual (Page 14)

ASUS Tablet PC User Manual 1
Rear view
Headphone output/microphone input combo jack port
This port allows you to connect the Tablet PC’s audio-out signal to
amplified speakers or headphones. You can also use this port to connect
your Tablet PC to an external microphone.
Volume button
Press this button to increase or decrease the volume.
Audio speakers
Your Tablet PC is equipped with a built-in high quality stereo speakers.
Microphone
The built-in microphone can be used for video conferencing, voice
narrations or simple audio recording.
Built-in Near Field Communication (NFC) tag
The built-in NFC tag allows you to conveniently share contacts, pictures,
videos, business cards, and other files. To use the NFC tag, put your Tablet
PC’s NFC tag near another NFC-enabled device.