Take a tour of iMac
Note: This guide is for the 21.5-inch and 27-inch iMac. If you’re not sure which iMac you have or want to find information about other models, see the Apple Support article Identify your iMac model.
Your iMac has the following features built in:
3.5 mm headphone jack: Plug in stereo headphones or the Apple iPhone headset with microphone to experience high-quality sound while watching movies, listening to your favorite music, or making phone calls.
SDXC card slot: Transfer photos, videos, and data to and from your iMac, with high-capacity SD cards.
USB 3 ports: Connect an iPad, iPhone, iPod, digital camera, camcorder, external storage, or printer quickly and easily. The iMac USB 3 ports support USB 3 and USB 2 devices.
Thunderbolt 3 (USB-C) ports: Connect Thunderbolt 3 and USB-C devices or displays. Or use an adapter to connect Thunderbolt 2 peripherals, a display or projector, and more.
Gigabit Ethernet port: Connect a router or modem to join the internet, or connect to another computer to transfer files without using Wi-Fi.
AC power cord: Pass the power cord through the hole in the stand, plug it into the power port on the back of your iMac, then plug the cord into a power outlet.
Power button: Press to turn your iMac on. (Choose Apple menu > Shut Down to turn off your iMac, or Apple menu > Sleep to put it to sleep.)
Display: 27-inch iMac models have a Retina 5K display. The 21.5-inch iMac has either a Retina 4K display or an LED-backlit display, depending on the model.
FaceTime HD camera: Make FaceTime video calls or take pictures and video with the camera at the top of the display. If the light is glowing, the camera is on. See FaceTime.
Speakers and microphones: Eliminate unwanted noise and boost your voice using the built-in microphones. Along with the stereo speakers, the mics work to improve your FaceTime and videoconferencing experience. See Siri on your Mac.