This converter converts an analog composite video signal (RCA) into a digital Full HD HDMI signal. Important Notes One-way only: RCA → HDMI (not HDMI → RCA). This device does not improve the original image quality. 1080p / 720p ToggleA switch lets you select the output resolution (up to 1080p) to match your display. It outputs video and L/R audio together over HDMI. PowerSimply connect to a standard 5V USB power source (e.g., TV/PC USB port or USB charger) to use. How to Use No driver required—just connect your composite (yellow/white/red) cables to the input and HDMI to your TV/monitor. If the HDMI source device does not supply enough power through its port, operation may be unstable. In that case, please use the included USB cable to supply power. If there is no picture or it fails to display, use an HDMI cable shorter than 3 meters.