We can see different types of interfaces in many electronic devices in our daily lives. KVM devices are also divided into several series according to the ports, such as HDMI KVM, VGA KVM, DP KVM, Cat5 KVM, etc. But what are they exactly? Today we will explore HDMI and VGA interfaces. After knowing the differences, you can choose your needed devices more conveniently.
What is HDMI?
HDMI means High Definition Multimedia Interface. Its function is to transmit digital signals including digital video and audio signals. As a normal interface, it is used everywhere. In addition, it can provide up to 50Gbps bandwidth, which can support a higher transfer rate. Because of the above features, it can support 4K high-definition videos.
What is VGA?
VGA means Video Graphic Array. It is also called D-Sub. It can transmit red, green, and blue analog signals, and synchronization signals (horizontal and vertical). We can easily find it on the computers. The resolution it supports is up to 1080p.
The differences between HDMI and VGA
According to their definition, we can easily know that they transfer different types of signals, content, interfaces, distances, and highest resolutions. Compared to the VGA, HDMI has stronger anti-interference capability. Its outstanding features include wide compatibility, high transmission rate, and smaller volume.
| Aspects | VGA | HDMI |
| Signals | Analog Signal | Digital Signal |
| Content | Video | Video+Audio |
| Distance | ≤15 | ≤30 |
| Max resolution | 1080p | 4K |
| Features | Diverse colors | Small volume High transmission rate Wide compatibility |
| Stability | Weak | Strong |
Which one should you choose?
It depends on your requirements. If you want to buy a KVM device to support 2K or 4K resolution, you should choose a device with HDMI interfaces. If you need to transmit video and audio signals at the same time, HDMI is also your first choice. However, if you have no requirement for resolution and audio, you can choose devices with VGA interfaces.
Conclusion
HDMI and VGA are important types of interfaces. The former supports 4K max resolution, and the latter supports 1080p max resolution. HDMI has more functions than the VGA. And choosing which one depends on your needs. After reading this guide, I guess you know already what you need to consider before you choose interfaces.
