Mac 
Mac computers that can use an Apple USB SuperDrive or MacBook Air SuperDrive
With an Apple USB SuperDrive or MacBook Air SuperDrive, you can play or burn both CDs and DVDs. Use the table below to determine if your computer can support the Apple USB SuperDrive or MacBook Air SuperDrive.
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.
If you lost or forgot your firmware password
Learn what to do if you don’t remember the firmware password you set on your Mac. Also learn what to do if you see a password that won’t go away when you try to select a startup volume.
Move your data to a new Mac
Migration Assistant transfers your accounts, documents, and settings from another computer to your Mac.
System requirements to install Windows on your Mac via Boot Camp
Learn about the general requirements to install Microsoft Windows using Boot Camp. Review the tables in this article to determine which Windows versions you can use with your computer.
Find the right power adapter and cord for your Mac notebook
Learn which power adapter, cord, and plug comes with your Mac notebook.
Mac notebooks: Determining battery cycle count
Use this article to determine the cycles on your Mac notebook’s battery.
If you don’t see your family’s shared content
Use these steps on an iPhone, iPad, or iPod touch that’s using iOS 8 to view or download shared content from your family members.
Sharing purchased content with Family Sharing
With Family Sharing, family members get immediate access to each others’ music, movies, TV shows, books, and apps, and can download them to their own devices any time they like.*
Mac Basics: Dictation lets you speak text instead of typing
With Dictation, you can use your voice instead of typing text. No setup or special training is required.
