Mini Display Port/Dp to VGA/HDMI/DVI Adapter for Macbook Pro

Features: mini display port the adapter seamlessly connect mac book, mac book pro, or mac book air with a mini display port to high definition displays support hdmi, dvi or vga input port you can connect the display to one of hdmi/dvi/vga output ports support audio output. when connecting the imac (late 2009) and mac book pro (mid 2010) to hdmi display, please set "sound" on the dialog box of "system preferences" to get audio output note: only one of the 3 outputs could be used at a time, you cannot use all of them simultaneously this product with three output ports, and you can choose one of them to use 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 3. vga output, connect the vga devices using a vga cable. 4. mini display port, connect mac book, mac book pro, or mac book air. specification: input signal: mini display port 1.1a output video: hdmi/dvi