Allnice High Performance 1080P Mini 3 Port Auto HDMI Switch Switcher Selector Adapter Video/Audio Switch Hub Box for HDTV 1080P Supports HDMI 1.3b, full HD 1080p and 3D. Mini size doesn't occupy much space or look messy; no external power supply needed. Automatic switching function - selector hub automatically switches to the device that is powered on first. 3 In 1 Out HDMI switcher selector box allows you to connect 3 HDMI devices to 1 HDMI port on your TV or monitor. Supports uncompressed audio such as LPCM and compressed audio such as DTS, Dolby Digital (including DTS-HD and Dolby True HD).