You can use certain iMac models as a monitor for another computer, typically another Mac, by using a feature called Target Display Mode.
To use your iMac as a display for another Mac:
- Ensure both the iMac you want to use as a monitor and the other Mac are turned on.
- Connect the two computers using the appropriate cable. The required cable depends on the models and ports of both Macs (e.g., Thunderbolt to Thunderbolt, Mini DisplayPort to Mini DisplayPort, or Thunderbolt to Mini DisplayPort).
- On the keyboard of the iMac you are using as the display, Press Command-F2.
Once activated, You should now see the desktop of the other Mac displayed on the iMac screen. The iMac is now functioning solely as a monitor for the source computer.
Exiting Target Display Mode
When you are finished using your iMac as a display, you can exit Target Display Mode in a few ways:
- Press Command-F2 again on the keyboard of the iMac.
- Disconnect the cable connecting the two computers.
- Restart either Mac.
Summary of Activation/Deactivation Methods
Here is a quick overview of how to control Target Display Mode based on the provided reference:
| Action | Method |
|---|---|
| Activate | Press Command + F2 on the keyboard of the iMac you want to use as the display. |
| Deactivate | Press Command + F2 again on the iMac.Disconnect the cable between the Macs. * Restart either Mac. |
This method allows supported iMacs to serve as external displays for other Macs, effectively extending or mirroring the other Mac's desktop.
