Micro HDMI cable transmits high-definition digital video and audio signals, featuring a compact, smaller version of the standard HDMI connector, making it ideal for ultra-portable devices like smartphones, tablets, and cameras. These cables perform similarly to full-sized HDMI cables but have a connector size of roughly 6.4mm by 2.8mm, supporting high resolutions up to 4K and features such as Ethernet and 3D video, depending on the HDMI version.