This adapter changes the digital HDMI®-signal into an analogue VGA-signal. As arule, the power supply of the adaptor occurs by the HDMI®connection. If it is notenough, additionally connect the micro USB socket of the adaptor with a freeUSB socket of its auxiliary equipment or use an external power supply (cable andpower supply not included in the scope of delivery)- This adapter changes the digital HDMI®-signal into an analogue VGA-signal- Perfect for the connection of HDMI®sources with monitors / beamers with VGA input- Supports AUDIO AND VIDEO- Separate 3.5mm stereo output for the audio-signal- Power supply: As a rule, the power supply of the adaptor occurs by the HDMI®connection- Input: HDMI®plug for audio and video - digital- Output: VGA socket for video - analogue, 3.5mm stereo socket for audio - analogue