Seadream Mini Display Port (Thunderbolt Port Compatible) to VGA/HDMI/DVI/Audio w/ Micro USB Port 4 in 1 Adapter 4-in-1, Portable, converts the standard DisplayPort input signal into Audio/VGA/HDMI/DVI audio and video output signal Supports 1080p HD signal, perfectly converts into voice/video output signal (when equipment's power supply is insufficient, please attached USB for external power supply) Widely used in equipments which has DisplayPort Port, converts the signal into Audio/VGA/HDMI/DVI output signal for TV and display devices Input: DisplayPort Output: Audio/VGA/HDMI/DVI Automatic detect the display by plugging and unplugging it.