HDMI technology is widely recognized for transmitting video and audio signals from devices like Blu-ray players or gaming consoles to TVs and monitors. However, it offers several less obvious features that enhance the multimedia experience. For instance, HDMI cables can transmit Ethernet data, allowing connected devices to share network access without the need for additional cables. Another notable feature is Consumer Electronics Control (CEC), which simplifies user experience by letting one remote control multiple HDMI-connected devices. Additionally, HDMI supports Audio Return Channel (ARC), enabling a TV to send audio signals back to an external sound system using the same HDMI cable, reducing cable clutter. The technology also carries High Dynamic Range (HDR) metadata, allowing TVs to deliver richer colors and better contrast for a superior viewing experience. Lastly, HDMI supports advanced multi-channel audio formats, facilitating high-fidelity and immersive sound in home theater environments. These capabilities underscore the versatility and continued evolution of HDMI beyond its traditional role.