Description: Supporting hot-swap mode, plug and play which is easy to use. When using external devices, data transmission can be realized without additional downloading of drivers. Owing to its transmission speed can reach 480Mbps, it copies fast and runs smoothly. Expansion dock is made of aluminum alloy material. The length of our product is 8.2cm, width is 1.5cm and height is 0.7cm. Our products are compatible with mainstream Type-C notebooks and Type-C interface mobile phones. Item Name: Expansion Dock Material: Aluminum Alloy Compatible Models: for Type-C Laptop/Type-C Interface Mobile Phone Interface Type: 4*USB2.0 / Type-c Transmission Rate: 480Mbps Size Details: 8.2cm x 1.5cm x 0.7cm/3.15" x 0.59" x 0.2" (Approx.) Notes:Due to the light and the screen setting difference, the item's color may slightly differs from the pictures.Please allow slight dimension difference due to the manual measurement. Note:The above data are all experimental measured values. Due to equipment and environmental issues, the data may be different or inaccurate. Package Includes:1 x Expansion Dock Have a great time shopping!