When using HD data output, we often need to input these data to different devices. As we all know, HDMI signal output interface is the standard high-definition signal output interface, these output devices such as computers, laptops, HD set-top boxes, hard disk player, PS3, Xbox360, Tablet PC, etc. with HDMI interface. Due to the actual situation, we need to input the signal to the device with VGA interface only, such as the display with VGA interface, LCD TV, projector. Then we need an HDMI converter. This article describes the Green Alliance HDMI to VGA cable with audio line output.