Wide application connect your iPhone, iPad, iPod anytime to a projector for home entertainment, business meetings, education, training and etc. Dual display with audio supports mirroring of what is displayed on your device screen – including apps, presentations, websites, slideshows, and more – to your HDMI-equipped TV, display, projector, or other compatible display in up to 1080p hd. You can also run speakers through this device without noticeable difference in audio quality. Combine with a 4 port USB 3.0 switch and you have a universal dock. External power supply need there’s one micro USB port for the adapter going to power source. Attached micro USB charging cable for you to get external power. An additional HDMI cable is required.(Not included)how to use: 1. First connect the converter to the charger for power supply 2. Then connect the HDMI, VGA, audio and other output devices 3. When the connection is successful, the phone displays the charging status, it will show “trust or not” 4. Click “trust” and wait for several seconds then will display frames note 1. This adapter does not support Netflix/HBO Go/Xfinity Player. 2. When put into use, please change TV to HDMI mode. 3. Adjust the volume on TV rather than cell phone. You can control the video via your cec-equipped TV remote.