This is an HDMI to VGA adapter, used to connect devices with different types of video ports.
It converts a digital HDMI signal to an analog VGA signal.
It allows connection between modern HDMI-enabled devices (like laptops or computers) and older VGA displays (monitors or projectors).
HDMI can carry both audio and video signals, while VGA is video-only.
The adapter has an additional audio port for sound transmission, as VGA does not support audio.