Before you buy this item, in order to avoid some unnecessary troubles,you must read those tips at first . Please note: Please make sure your device is compatible with the extension, otherwise it cannot be used. The Type-C interface of the laptop must be Thunderbolt 3 or support the USB3.1 protocol.HDMI function requires Type-C interface to support Display mode There are 3 models available, please choose suitable model according to your needs: (1) 6 in 1 Model: HDMI-compatible *1+USB 3.0*1+ USB 2.0*1+SD/TF*1 + PD*1 (1) 5 in 1 Model: USB 3.0*1+ USB 2.0*1+ SD/TF*1 (1) 4 in 1 Model: HDMI-compatible *1+USB 3.0*1+ USB 2.0*1+ PD*1 IMPORTANT NOTE - When connecting to laptop, Do NOT support charging cellphone through USB-A or USB-C female port due to limited current. - Please provide power supply when connecting to power-hungry devices; Only support connecting 1 HDD/SSD at a time. - To prevent Wi-Fi interference, you could wrap the line body near type-c port with foil paper, or using the router of 5GHz frequency. Also, please unplug ethernet cable and PD charging cable from adapter when not using. - For Xiaomi laptops, we suggest connecting to non-original PD power adapter such as Apple, Dell power adapter to ensure normal use. 6 IN 1 Docking station Solve the single problem of your laptop interface Smart and Versatile Multi-funtion interface expansion Meet your multi-interface expansion needs Charging while playing without power failure Support 87W fast charge,up to 100W,1.5 hours full macbook Watch 4K HD TV HDMI interface supports 3840*2160/30Hz resolution give you a cinema-like experience Dual cards can read at the same time solve the problem of macbook /ultrabook card reading without card slot 1G movie 5 seconds transfer 5Gbps transmission speed 500MB/S per second,transmission without pressure Small and convenient easy travel Put it in your briefcase easily withou burdening you Examples of some supported models suitbale for apple macbook,huawei matebook,xiaomi notebook and huawei P30 ,MATE 30, Samsung S9,S10 series mobile phones