100% Product test method: The setup includes a screen mirroring device, a 1.4 standard HDMI signal transmission cable (A-type male to A-type male), a mobile phone data cable, and a charging head. First, connect the Micro USB connector of the screen mirroring device to the mobile phone's data port, then connect the HDMI cable to the HDMI-A female interface to establish a basic HDMI signal transmission line. Note that the screen mirroring device requires external power, so connect the phones original data cable to the Micro USB female port on the side of the adapter and ensure the power is turned on. Connect to HDTV Once the playback setup is complete, connect to the high-definition display terminal. The display used in testing was a Samsung LA40C530 40-inch Full HD LCD TV (16:9 widescreen) with HDMI and USB ports, supporting 1080P resolution. Mobile phone screen and HD TV image synchronization When both the mobile phone and the HD TV are powered on and the HDMI icon appears on either screen, the mobile phone's HDMI signal is successfully transmitted to the TV via the screen mirroring device. Package included: 1 x HDMI Adapter Note: 1. Due to differences in monitor settings and lighting effects, the actual color of the item may vary slightly from the images shown. 2. Please allow 1-3 cm measurement deviation due to manual measurement. (1 inch = 2.54 cm)