Features: It adopts USB standard, supports the data transmission rate of up to 480Mbps, and provides you with a rapid file transmission experience, which is very suitable for devices that need to read and write quickly. The TYPE C interface is suitable for variety of devices, including laptops, tablets and phones, and performs well in both office environment and home entertainment. Provide additional power for connection devices, ensure the stable operation of equipment, and avoid the situation that the equipment cannot work normally due to insufficient power. Easily connect without installing a driver, which improves the convenience of use and reduces the cumbersome setting process. It is suitable for offices, conference room, realizing the rapid connection and expansion of various devices and meeting the needs of office. Specifications: Size:Approx.5x4cm/1.97x1.57inch Package Includes: 1Pc USB Expansion Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.