High-Definition Multimedia Interface (HDMI) standard has been in existence since 2002 and is currently the most prevalent method for transmitting a video signal from a device to a display. But what if there is no need to send video to a screen, yet you still wish to utilize your device? This is where an HDMI dummy plug comes into action, facilitating what is referred to as headless operation. This may sound cumbersome, but in the context of HDMI, it simply implies that you can operate your system without a connected monitor.
These plugs deceive the host computer into believing that a display is connected when it is not. A prime example of the practicality of an HDMI dummy plug is when you need to keep a computer running for extended periods, perhaps for home automation, without the necessity of accessing the monitor. Maintaining a monitor and cables occupies a significant amount of space, particularly when utilizing a small form-factor PC for various automation tasks.
The energy consumption of a monitor may also be a factor for those who may have a PC running continuously throughout the day. Moreover, a primary consideration for many is utilizing an HDMI dummy plug for game streaming: if a monitor is not connected, your GPU may be restricted from outputting at maximum resolution, as it is searching for a display to establish the correct output size.
