Multi-fuction Mini DP Adapter with Audio output, supports HDMI/DVI/VGA output simultaneously with the max resolution of 1920x1080 to enjoy your favorite movies, YouTube clips, iTunes songs and movies.3 monitors show at the same time ! But you can't make each monitor show a different picture from each other.No Suppport Acer R7 Lightweight and portable adapter allows you to display content on your HDTV, monitor, computer, tablet, projector and other devices with HDMI & DVI & VGA to Mini DisplayPort (thunderbolt port). Note: A separate HDMI/DVI/VGA cable is required, not included, Not compatible with Thunderbolt 3 (USB-C) ports Transmit both audio and video from computer or tablet to HD TV via HDMI. Support video resolutions up to 1920x1080p (Full HD) and flawless audio pass-thru. Support audio output via DVI or VGA with connecting Audio interface external speaker needed for voice. When connect to monitors , all ports need a speaker to get audio out.