NEW-COMES WITH A 30-DAY MONEY BACK GUARANTEE. 

Note: The product is turned on by default when it is powered on for the first time, after which it is turned on/off by long pressing the button for 2-3 seconds.Before use, please plug in the DC power supply first, then connect to the computer, and then plug in the PD power supply. After the charging icon becomes a white transparent shape (white transparent shape: represents the current has risen, and the black shape represents the current has not reached), then press the switch button to shut down. Wait about 3-5 seconds before turning it on. Support hot plug, plug and play, easy to use. UCN3343 is a high-performance Type-C to USB3.0 hub, high-speed SD / MicroSD card reader with HDMI video output, and supports Mac Book OS and Windos expansion (MST) mode, 1000M network card interface Functional product, this product is DC power input, USB PD3.0 charging standard. Type-C supports USB3.1 Gen2 10Gbps speed transmission, and is backward compatible with USB3.0, USB2.0. The card reader supports MicroSD, SD, SDHC, SDXC and other memory cards, and supports simultaneous read and write. Supports up to 2TB capacity and speeds up to 100MB / S Support GigaLan, 10M / 100M / 1000M adaptive Ethernet interface (free driver). Support HD HDMI 1 3840 * 2160 / 30Hz video output. Support high-definition HDMI 2 1080P / 60Hz video output. Support HD DP 1920 * 1080 / 60Hz video output. FLEXIBLE EXPANDABILITY Add multi-monitor capability to a single computer, to enhance multimedia presentations. Improve efficiency by running multiple applications on different screens View large or several spreadsheets across multiple displays. Compact, lightweight solution for travel business partners, which can be connected to an auxiliary display / projector.