Check how many displays you can connect
If you’re connecting multiple displays to your Mac, use the Tech Specs page to find out how many external displays your Mac supports.
- Choose Apple menu > About This Mac, double-click your serial number, then press Command-C to copy it.
- Go to the Tech Specs page, click the Search Tech Specs bar, press Command-V to enter your computer’s serial number, then click Search.
- Click the specs page for your Mac. The number of displays your Mac supports appears under Video Support or Graphics.
