Multi-function interface: Provides 8-in-1 multi-function interface, including HDMI (supports 4K@30Hz), USB 3.0, SD card slot, TF card slot, USB-C PD input (supports 100W fast charging), etc., to meet the connection needs of various devices. Aluminum alloy material: Made of high-quality aluminum alloy, it is sturdy and dur, with good heat dissipation performance, ensuring stability during long-term use. Portable design: Lightweight and portable, easy to carry, suitable for business trips, travel and other scenarios, expanding the functions of laptops anytime, anywhere. Fast charging: Supports 100W PD fast charging, which can provide fast charging for laptops or other devices, saving charging time and improving work efficiency. Laptop stand function: Not only is it an expansion dock, it also has a laptop stand function, which can raise the laptop, improve the comfort of use, and improve the heat dissipation effect. Product color: Silvery Product weight: 300g Product size: 24.75*266.2*55mm