When the cable is not long enough, you can extend the use distance of the Type-C interface. This Thunderbolt 4 extension cable enables you to connect laptops with USB-C ports (supporting DP Alternate Mode for video) to external monitors with USB-C ports. An external Thunderbolt 4/3/2 male to male cable is required to connect to your laptop or display. 40Gbps data transfer rate: With this Thunderbolt 4 extension cable, you can transfer large files such as 14 hours of HD video or 25,000 HD photos in approximately one minute at full speed. 8K/6K Ultra HD video output: This Thunderbolt 4 extension cable supports 8K/6K/5K/4K@60Hz video resolution, delivering high-quality visual performance. Compatible with Thunderbolt 3/2, USB4, USB-C 3.2, and 3.1 standards and devices. 100W rapid charging: Supports up to 100W 5A power delivery, enabling fast charging for compatible devices such as MacBook. Upgraded coaxial design: Features an improved coaxial internal wiring for enhanced flexibility and strong signal interference resistance. Includes customer support and an 18-month warranty for product quality assurance.