Mini DisplayPort: a DisplayPort that's much smaller in size, but otherwise looks the same as a regular DisplayPort.DisplayPort: looks similar to HDMI but only one of its corners is cut diagonally, while the other three corners all have right angles.Look on the back and the sides of your laptop and check for the following details to correctly identify the type of ports available on your laptop: If you own an old laptop, it might not have any of the video ports we've mentioned, instead coming with older types of ports such as DVI, VGA, or even S-Video. Some choose to use smaller video ports such as USB-C or faster and more capable DisplayPort ports.

The reasons for laptop manufacturers to include other types of video ports differ. If you don't have HDMI on your laptop, you might have another type of video port on it. How to connect an external monitor using other types of ports and cables (USB-C, DisplayPort, DVI, VGA, S-Video)