macOS User Guide
- Work across devices using Continuity
- Use iPhone as a webcam
- Use iPhone with Desk View
- Stream audio and video with AirPlay
- Use one keyboard and mouse to control Mac and iPad
- Hand off between devices
- Unlock your Mac with Apple Watch
- Make and receive phone calls on your Mac
- Sync music, books, and more between devices
- What is Family Sharing?
- Set up Family Sharing
- Add a user or group
- Set up Screen Time for a child
- Share purchases with your family
- Watch and listen together with SharePlay
- Share a Photo Library
- Collaborate on projects
- Find content shared with you
- Find your family and friends
- Play games with your friends
- Resources for your Mac
- Resources for your Apple devices
What is Power Nap on Mac?
Power Nap, available on Mac computers with flash memory, lets some Mac computers stay up to date even while they’re sleeping. When your Mac goes to sleep, Power Nap activates periodically to update information. The information that’s updated depends on whether your Mac is running on battery power (a Mac notebook computer) or plugged into a power adapter (a Mac notebook computer or Mac desktop computer).
When your Mac is asleep and using battery power, Power Nap:
Checks for new messages in Mail
Updates events in Calendar
Updates other iCloud events
When your Mac is plugged into a power adapter, Power Nap can also do activities such as downloading software updates and performing Time Machine backups.