Different types of monitor ports

Previously, only an analog VGA interface was utilized to connect the monitor to the computer. With the development of new technologies for flat-panel monitors, the capabilities of the VGA connector have become insufficient. To attain the highest image quality, you need to use a digital standard, such as DVI. Manufacturers of devices for home entertainment have created the HDMI standard, which became the digital successor of the analog scan connector. Somewhat later, VESA (Video Electronics Standards Association) designed DisplayPort. As mentioned earlier, modern devices are equipped with various monitor ports: HDMI, DVI, VGA, DisplayPort. Let’s consider each of the interfaces.

Common, but old.

Monitor with VGA port.

The then-leading IBM computer manufacturer developed the first connection standard, used today too, in 1987 for its PS / 2 series PCs. The blue trapezoidal interface worked perfectly with old CRT displays, thanks to its analog nature. But then flat LCD digital screens appeared, resolutions began to grow, and the time-honored VGA port started to give up ground. Today, it is more rarely integrated, but until now, an array of devices such as home players, projectors, TVs, etc. are still equipped with VGA ports. Probably, for several more years more, it will remain not as desirable, but still the ubiquitous standard.

Monitor with DVI port.

This abbreviation stands for Digital Visual Interface. It transmits a video signal in digital format while maintaining high image quality. In the mid-2000’s, DVI replaced the rapidly outdated VGA. The ability to transmit both analog and digital signals, support for large (in that era) resolutions and high frequencies, and the lack of inexpensive competitors led to DVI becoming a standard port for today. Low-cost video cards are equipped with the Single Link DVI. The maximum resolution, in this case, is 1920x1080 pixels - Full HD. More expensive video card models have a Dual Link DVI interface. They can be connected to monitors with a resolution of up to 2560x1600 pixels.

Modern types.

Monitor with HDMI port – the king of multimedia.

HDMI stands for High Definition Multimedia Interface. In modern home entertainment devices, such as flat-panel TVs and Blu-ray players, HDMI is the standard connection interface. As in the case of DVI, the signal is transmitted in digital format, which means maintaining the original quality. Together with HDMI, HDCP (High Bandwidth Digital Content Protection) technology was developed to prevent the piracy and illegal copying of video materials. The first devices with HDMI support appeared in late 2003. Since then, the standard has been changed several times; in particular, support of new audio and video formats has been added. Precisely why did HDMI become so popular?
• Length of cabling up to 25-30 meters;
• Sound transmission (even multi-channel) together with video – no need for separate speakers;
• Convenient small connectors;
• Support for many different devices: players, TVs, projectors, DVRs, game consoles, etc.;
• Ultrahigh resolutions;
• 3D-picture; possible together with ultra-high resolutions (versions of HDMI 4b and 2.0).

The prospects for HDMI are the most promising - development keeps moving. In 2013, the specifications of version 2.0 were adopted; this standard is compatible with old wire connectors, but it supports resolutions that are more impressive and other excellent features.

Monitor with Display Port – only becomes ubiquitous.

For many years, computers were rarely equipped with this competitor of HDMI this in spite of the fact that DisplayPort has many strengths:
• Support for very high resolutions along with stereo signal;
• Audio transmission;
• Impressive length of cabling

This interface technology is even more profitable for manufacturers than the licensed HDMI: they do not need to pay the developers the 15-25 cents that would be necessary for users of HDMI. Although in its first years of existence this type of connector was not particularly popular, now computers are more often equipped with a pair of Display Ports.

Monitor with USB port.

The connection with the help of USB connector became possible when version 3.0 appeared. Using the DisplayLink adapter, you can connect a monitor with a DVI / HDMI connector to the USB port of your laptop or computer. Such ports are the standard for connecting external devices, which all manufacturers of these devices are eager for. USB ports connect mice, keyboards, printers, scanners, modems, card readers, flash drives, cameras, cell phones, players, hard drives, optical drives, etc. This connector is needed for those who plan to work simultaneously with multiple monitors.

In conclusion.

Having become acquainted with all types of ports, now you understand what exactly you need. Regardless of what suits your requirements best, you can find monitors with any ports you need among the range of products at Xenarc Technologies.

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