You may be able to connect one or more external displays to your Mac. To do so, you need a video cable for each display, and you might need an adapter. See the Apple Support article Adapters for the Thunderbolt 4, Thunderbolt 3, or USB-C port. I had to come up with this post because I recently added a third screen. For each display, securely connect a video cable (and adapter, if necessary) from a video output port on your Mac to the video input port on the display. After you connect one or more displays to your Mac, you can choose whether to use them as an extended desktop or for video mirroring.

However, Kindly refer to these related guides on macOS: How to connect and remove Beoplay E8 3rd Generation to Mac, How to upgrade macOS Big Sur to macOS Monterey, Install Telegram Desktop: How to integrate WordPress site with WP Telegram, how to enable or disable automatic Live Caption on macOS through Chrome, and how to stop apps from launching automatically upon startup on Mac.

See the images below. On your Mac, choose Apple menu  
- System Preferences, then
- Click Displays  See the images below.

Moreover, You can connect one or more external displays, depending on your Mac. Before we start discussing the various connection methods, I would like to discuss the various video ports on Mac. Nonetheless, This is because, Mac includes one or more video ports which you can use to connect to a display, TV, or projector.

If your Mac has a Thunderbolt 3 (USB-C), Thunderbolt / USB 4, Thunderbolt 4 (USB-C), or USB-C port, you can use USB-C adapter cables to connect your Mac to displays and other devices.

Video port	Icon	Description
		Thunderbolt 3 (USB-C), Thunderbolt / USB 4, and Thunderbolt 4 (USB-C): Connect to a Thunderbolt device or Mini DisplayPort display. Use an adapter to connect to a Thunderbolt 2 device or a DVI, HDMI, or VGA display.
	No icon	USB-C: Connect to a Thunderbolt device or Mini DisplayPort display. Use an adapter to connect to a Thunderbolt 2 device or a DVI, HDMI, or VGA display.
		Thunderbolt and Thunderbolt 2: Connect to a Thunderbolt device or Mini DisplayPort display. Use an adapter to connect to a DVI, HDMI, or VGA display.
		Mini DisplayPort: Connect to a Mini DisplayPort. Use an adapter to connect to a DVI, HDMI, or VGA display.
		HDMI: Connect to an HDTV with an HDMI port. This port lets you play your computer’s audio as well as its video on an HDTV.

Connect the displays

Nonetheless,When connecting your display(s) to mac and finds out your Mac has different ports, use an adapter. You can purchase an Apple display adapter from an Apple Store or Amazon etc.

For Mac computers with the Apple M1 Chip

Furthermore, You can connect a single external display to your Mac. Docks don’t increase the number of displays you can connect. Moreover, On a Mac mini with M1 chip, you can connect a second display to the HDMI port.

For Mac computers with Thunderbolt 3 (USB-C)

You can connect a single display to each port. If you connect multiple Thunderbolt devices to each other, the Thunderbolt 3 display must be the last device in the chain. If your Thunderbolt 3 display has USB ports, those can be used for data and power.

For Mac computers with Mini DisplayPort, Thunderbolt, or Thunderbolt 2

You can connect up to two displays. If the displays themselves have Thunderbolt ports, you can connect one display to another, and then connect one of the displays to a Thunderbolt port on your Mac. If your Mac has two Thunderbolt ports, you can connect each display to separate Thunderbolt ports on your Mac. A DisplayPort device must be the last device in a chain of connected Thunderbolt devices.