If this device isn't working by just plugging in, try it on another device. If it still doesn't work get a refund.
The UGREEN Revodok 5-in-1 USB-C Hub with 4K HDMI is a versatile device that expands the connectivity options of USB-C enabled laptops and devices. This hub offers various ports including a 4K HDMI output for high-quality video and audio transmission to external displays, enhancing your multimedia and productivity capabilities. It also features USB-A and USB-C ports for data transfer and charging, an SD card reader, and a 3.5mm audio jack for a comprehensive range of connections. The compact and portable design makes it convenient for on-the-go usage, transforming your USB-C port into a multi-functional hub for various peripherals and devices.