What Are the Differences Between HDMI, DisplayPort and VGA?

HDMI, DisplayPort and VGA are connection interfaces used to carry video from a computer to a monitor. However, the video features they support and the technology they use differ.

• HDMI: Supports digital video and audio transmission. Widely used with industrial monitors and standard displays.
• DisplayPort: Provides digital video transmission and, with the appropriate version and hardware, can support high resolution, high refresh rate and the use of multiple displays.
• VGA: An analog video connection. It can be used when compatibility with older monitors and equipment is required.

When choosing an industrial PC, check the monitor's connection type, resolution, refresh rate and the number of displays to be used at the same time. The presence of a connector does not by itself show that a particular resolution or number of displays is supported.

Connections such as VGA may be needed when an old system is being renewed. In new systems, digital connections generally offer an advantage in higher image quality and wider feature support.