iMac - Official Apple Support

Upgrade to macOS Sierra

macOS Sierra adds new features that let you do more than ever with your Mac.

Learn how to upgrade your Mac

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Set up your new Mac

Use these basic setup steps to get your new Mac up and running.

Start setting up

Move your content to a new Mac

Use Migration Assistant to copy all of your documents, apps, user accounts, and settings to a new Mac from another computer.

Move your content

Back up your new Mac

There are several ways to regularly back up the files on your Mac.

Start backing up

Using 4K displays and Ultra HD TVs with your Mac

Learn which Mac computers can use 4K displays and Ultra HD TVs. Also learn what the requirements are and how to set up and adjust the display or TV.

See displays

Get help with video issues on external displays connected to your Mac

Try these steps if the image on an external display connected to your Mac is blank, or doesn't look the way you expect.

Get help with video

Print from your Mac

Learn how to print pictures and other documents from your Mac to a printer.

Learn about printing

Connect an AirPrint printer to a Wi-Fi network

You can connect an AirPrint printer to a Wi-Fi network for wireless printing from your Mac, iPhone, iPad, or iPod touch.

Learn about AirPrint

Resolve printer issues on your Mac

Follow these steps if you can't get your printer to work with your Mac.

Get help with printer issues

Check for Wi-Fi issues using your Mac

Your Mac can analyze Wi-Fi connections for certain issues, then recommend solutions.

Get help with Wi-Fi

Use AirDrop to send content from your Mac

With AirDrop, you can wirelessly send photos, videos, websites, locations, and more to a nearby iPhone, iPad, iPod touch, or Mac.

Learn more about AirDrop

Use AirPlay to display video from your Mac on an HDTV

If you have an Apple TV, you can use AirPlay to wirelessly stream video to your HDTV from Safari or QuickTime Player, or use your HDTV as a Mac display.

Use AirPlay

Using a Bluetooth mouse, keyboard, or trackpad with your Mac

Learn about connecting Bluetooth input devices to your Mac, and get tips for using them.

Connect devices

Recharge the built-in battery in your Apple accessory

Learn about charging the built-in battery of your Magic Keyboard, Magic Mouse 2, and Magic Trackpad 2.

Learn how to recharge

If your Apple wireless mouse, keyboard, or trackpad aren't working as expected

Try these steps to fix issues with your Apple wireless mouse, keyboard, or trackpad.

Get help with mouse, keyboard, and trackpad

iMac: Memory specifications and upgrades

Learn about the types of random access memory (RAM) and video memory (VRAM) used in iMac computers. For specific instructions on installing memory, refer to the linked documents.

See memory types