The DG-CAB-HDMI-21 from CoolBox, although listed as a power supply, is actually a flat HDMI cable designed to connect high-definition audiovisual devices, offering a 2-meter length for easy adaptation in any home or professional setting. This model features HDMI type A male/male connectors with a black and grey finish, providing both durability and a sleek visual integration with most multimedia equipment. Compatible with HDMI 2.1 version, it supports content transmission at resolutions up to 8K at 60Hz and 4K at 120Hz, ensuring sharp and smooth images—ideal for current TVs, monitors, gaming consoles, and home theater systems. It also supports dynamic HDR for optimized color and contrast, delivering a more immersive and realistic viewing experience. The enhanced audio return channel (eARC) ensures high-quality audio transfer between devices, essential for audiovisual setups requiring maximum sound fidelity. Its gold-plated contacts improve conductivity and resist corrosion, helping reduce signal loss even in demanding environments. Thanks to its flat design, this cable allows for easy management and discreet routing in tight spaces, preventing tangles and simplifying installation along walls or furniture. The CoolBox DG-CAB-HDMI-21 stands out as a robust and complete option for those needing advanced HDMI connections in modern audiovisual systems.