Kanex Introduces HDMI Adapters for Apple TV 4th Generation
Amazon.com: Cable Matters [Ultra High Speed HDMI Certified] 48Gbps 8K HDMI Cable 3.3 ft / 1m with 8K@60Hz, 4K@240Hz and HDR Support for PS5, Xbox Series X/S, RTX3080/3090, RX 6800/6900, Apple TV,
The HDMI cable does not fit in the refurb… - Apple Community
Apple hid a Lightning connector for debugging in the Apple TV 4K's ethernet port - 9to5Mac
Apple TV 4K (1st generation) - Technical Specifications - Apple Support