LinkS VGA +USB to HDMI Scaler/Converter with Audio Support in Black Supports Both Video and Audio The Converter Takes Audio from the Computer via USB and Embeds it to the HDMI Output along with Vide Plug and play: no installation of any driver and software and No External Power Source Required The usage tips: Please read the second photoes carefully: Use the hdmi output of this adapter to connect your hdmi input monitor. Use the USB port to your computer to gain the audio and power. Use the VGA input port of this adapter to conncet your VGA output device. Use the audio port to your audio port. Power Source Required by usb.One Year Warranty By LinkS