1. Convert analog audio and video signals into a single HDMI output for use with HD displays 2. Up-scales Composite Video or S-Video up to full HD 1080p; 3. HDMI output is optional at 720P 50Hz/60Hz (LED: red )or 1080P 50Hz/60Hz;(LED:Green) 4. Composite Video ,HDMI and S-video can stay simultaneous connection, and to be selected as the input source by the switch button 5. Composite Vide and S-Video Share the same audio input