This products is a high-performance portable digital-to-anolog conversation line, portable source will support MHL Micro usb interface converter for VGA and Audio output.  Micro USB interface independent one product ,its working principle for the use of the product must be connected to a charger or all data charging and power supply of the product line of portable source with MHL functionality square normal connection.  Features:  The Micro-USB to VGA MHL Adapter is ideal for connecting your Tablet, Smart phone or other MHL enabled device to an VGA TV using your VGA cable. It automatically switches the phone into USB data / charging or MHL video modes.  Micro-USB shaped MHL jack  Automatically switches the phone into USB data / charging or MHL video modes  This MHL adaptor allows you to create an VGA output via your handset's micro USB connection  MHL must be an external power supply, otherwise there is no output to VGA  Connected to the line after the MHL, you must restart the handset, remember, the first time must take the above MHL line inserted in the phone restart the phone, or without VGA output  MHL output does not need any settings, restart the phone after the auto-output Support: For Samsung Galaxy S3 i9300 i9308  Package include:  1 x MHL to VGA cable with audio output  1 x Audio cable