1. The WIDOW system machine can only download the music and video files to the TF card through the computer first and then plug it into the machine to play, but it must be in a format that can be recognized by the machine. If the software is downloaded to the TF card through the computer, the machine cannot In progress. 2. Android system machines can be downloaded to the machine’s memory card or TF card through WIFI and computer and then installed and run (music, video, and software are both possible)