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Various connections for displays and beamers


There are an awful lot of different connectors around to connect a display. To send an image signal to it.

We list the most common connectors below and show a picture of how to recognise them.

USB-C with displayport support

In 2023, this is a very common connection that cannot necessarily also transmit images. This is often difficult to understand. The advantage of this connector is that it is super universal and can be found on iPhones since iPhone 15. The disadvantage is that the connection does not necessarily mean that enough power flows over it or image can be sent along with it.

Either way, this is the USB-C connection. If it can also send images, the computer often has a displayport icon (Displayport Icon) displayed next to the connection.

USB-C - Wikipedia

Mini DisplayPort

Mini DisplayPort to HDMI Adapter - 1080p - Displayport-adapters |  StarTech.com België






This is still an analogue image signal. Each pin in the connector has a specific purpose. For example, 1 broken pin can cause you to get an image without blue because that was just the pin that transmitted the blue colour (RGB you know) to the screen.

The VGA connector is blue in a lot of circumstances. But also exists in plain white, grey, black or other colours. The blue colour comes from the time when VGA was the common standard. Back then, keyboard and mouse were not via USB, but via PS/2 connection. Keyboard was then purple, mouse green and people thought it would be a good idea to give the display connection a colour as well. So it is often blue.




Définition de DVI

A DVI port has several variants. The two most well-known DVI ports are the DVI-D and the DVI-I port. The main difference between these two types of technologies is that a DVI-I cable transmits analogue and digital signals, and a DVI-D cable only a digital signal.

The DVI-I port was originally designed for connecting computers to a CRT monitor. The DVI-D port, the cable that transmits only digital signals, has long been the standard connection for TVs and computer monitors, but is now often replaced by the HDMI connection cable.




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