Product description: Quantity: 4pcs USB C Female to Female Design: This is a USB C female to female adapter, which means only Type C 3.1 male cables or devices can be connected on both sides . 40Gbps & 8K Video DuHeSin USB C coupler meets USB 4 power specifications and data transfer rates, supports 40Gbit data transmission speed /s. With a USB4 cable, it can support 8K@60Hz HD video and audio output. 100W PD Fast Charging: This USB C female to female connector will run up to 100W and fully provides the amount of power to meet your MacBook or other USB-C device needs. It can automatically adjust the output power settings according to the needs of your device. Very convenient and reliable: small and portable. A set of 4 can fully meet your daily needs. Plug and play. No external drivers or software installation required. Each USB-C coupler is manually tested to ensure it can work perfectly. Universal Compatibility: Works widely with most Type-C devices. For Thunderbolt 4/3, MacBook Pro, Chromebook, Surface Book, USB C hub, Google Pixel, Samsung Galaxy S22/S21/S20/S10, Note 20/10, LG G5/G6, etc.