GeekClan VGA To HDMI Output With Audio USB Power 1080P HD TV AV HDTV Video Converter Adapter PC/Laptop To HDMI TV/Projector - Black This product is to convert analog signal( VGA ) to digital signal ( HDMI ). The audio is coupled with the VGA video signal, then audio and video are both converted to HDMI format The product design with the Cool black,matching 3.5mm headphone audio input and 1.4 HDMI It does not output in the opposite direction,It is only suitable for the device upgrade with the VGA interface trough connection HDMI HD indicator. This product with the chip, and need external power source, the operating current :170mA, the universal USB cable supply to demand normal work Test the known desktop, laptop, security hard disk video and other devices that attached the VGA output can normally work with this product,, and it support the usually use system:win7, win8,win10 and so on. The resolution can free adjust from 800 x 600 to 1920 x 1080 with the support of the system