User Guide

• Audio connector, 3.5 mm (0.14 inches) in diameter

• Microphones

• Speakers

Your computer also has an audio chip that enables you to enjoy various multimedia audio features, such as

the following:

• Compliant with High Definition Audio

• Playback of MIDI and MP3 files

• Recording and playback of PCM and WAV files

• Recording from various sound sources, such as a headset attached

The following list provides information about supported functions of the audio devices attached to the

connectors on your computer or the docking station.

• Headset with a 3.5-mm (0.14-inch), 4-pole plug: Headphone and microphone functions

• Conventional headphone: Headphone function

Note: The conventional microphone is not supported.

Using the smart audio feature

The smart audio feature is supported on some computer models. To help protect against hearing loss, the

feature limits the computer’s maximum wide band true RMS output voltage to 130 mV when a headset or

headphone is connected.

To change the setting, do the following:

1. Go to Control Panel and view by Large icons.

2. Click SmartAudio. In the window displayed, click the Disable Headphone Limiter icon. Then follow the

on-screen instructions.

Using the cameras

Depending on the model, your computer might be equipped with an infrared camera and a conventional

camera.

Using the conventional camera

To use the conventional camera to take pictures and record videos, open the Start menu and click Camera

from the program list. If you use other programs that provide features such as photographing, video

capturing, and video conferencing, the camera starts automatically when you enable the camera-required

feature. When the camera starts, the camera status indicator nearby turns green, indicating that the camera

is in use.

If you want to configure the camera settings, open the Start menu and then click Lenovo Vantage ➙

Hardware Settings ➙ Audio/Visual. Locate the Camera section and then follow the instructions on the

screen to configure the camera settings.

Using the infrared camera

The infrared camera provides a personal and secure way for you to sign in to your computer with face

authentication. After setting the infrared camera for face authentication, you can unlock your computer by

scanning your face instead of using a password.

The infrared camera has the following components:

P72 User Guide