Apple iMac (21.5-inch and 27-inch, Mid 2011) - Manual (Page 21)

21 Chapter 2 Life with Your iMac
Built-in microphone
Capture sounds on your iMac, or talk with friends live over the Internet using the
included iChat application.
Built-in FaceTime HD camera and camera indicator light
Use the FaceTime application to make video calls to other FaceTime users (on any
iPhone 4, iPad 2, new iPod touch, or Mac with FaceTime), take pictures with Photo Booth,
or capture video with iMovie. The indicator light glows when the FaceTime HD camera
is operating.
Built-in ambient light sensor
Automatically adjusts the brightness of your display, based on ambient light.
Slot-loading SuperDrive
The slot-loading SuperDrive reads and writes standard-size CDs and DVDs.
SD card slot
Easily transfer photos, videos, and data to and from your iMac with an SD card.
Built-in stereo speakers
Listen to music, movies, games, and other multimedia files.
Built-in infrared (IR) receiver
Use an Apple Remote (available separately) with the IR receiver to control Keynote on
your iMac from up to 30 feet (9.1 meters) away.