CableDeconn Gold Plated Mini Displayport (Thunderbolt Port Compatible) to Hdmi/dvi/vga 3-in-1 Adapter for Apple MacBook Air Pro Hdmi Port Supporting 4kx2k Resolution White Mini DP DisplayPort 1. 2 Thunderbolt TO DVI VGA HDMI 4K*2K adapter 3 in1 for Apple MacBook Air Pro iMac three output ports, you can choose one of them to use at same time. Note: only supports 1 Display output at a time As you demand, the functions of the port as followings: 1. Dvi output, connect the DVI devices using a DVI cable. 2. HDMI output, connect the HDMI devices using a HDMI cable. A separate HDMI/DVI/VGA cable is required, Not included VGA output, connect the VGA devices using a VGA cable. 4. Mini Display port, connect Mac book, Mac book Pro, or Mac book air Support Mini Display port 1. 2 dual-mode input, Mini DisplayPort is not compatible with Thunderbolt 3. Thunderbolt 3 using USB Type-C port and not Mini DisplayPort The HDMI can support Audio output for I Mac (Late 2009) and Mac book Pro (Mid 2010), Please be aware that with an OS X Mavericks update (10. 9 and later) Apple disabled 4K output on the vast majority of previous Mac models. For a list of compatible Mac systems, Please Google HT202856