USB debugging must be enabled on the mobile phone for the adapter cable to work. No need to set any output settings, the product will automatically output after restarting the mobile phone. Connect the HDMI-compatible TV first, then connect the USB power cable, and finally connect the product to the mobile phone. The mobile phone must be restarted. The product requires an external power supply of at least 5V 1A to output to HDMI-compatible. After connecting the product, the mobile phone will display the HDMI-compatible logo (some mobile phones may not display it) and indicate that it is charging. Remember to plug the product into the mobile phone and restart it for the first use, otherwise there will be no HDMI-compatible output. Item Name: Adapter Cable Material: ABS Features: Plug And Play, Flexible, Portable Transmission Speed: 500 (MB/s) Size Details: Length: 183cm/72.05" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Adapter Cable