Features 1.3 In 1 Out: High performance 3 HD Multimedia Interface Input and 1 HD Multimedia Interface digital, analog sound output switch supporting fast switching of HD Multimedia Interface input ports. 2.Multi Function: HD Multimedia Interface switcher supports all HDTV formats up to 4Kx2K and also supports all 3D TV formats and HDCP repeater function. 3.Widely Compatible: This HD Multimedia Interface switch is compatible with standard HD Multimedia Interface 1.4a, CTS1.4a, DVI 1.0 version and supports HD Multimedia Interface 1.4b. 4.Premium Sound Output: The HD Multimedia Interface switcher selector supports sound output for Dolby TrueHD DTS HD master sound 7.1CH, enhancing your experience of use. 5.Compact And Portable: This 3 port HD Multimedia Interface switch is very compact, convenient to carry and easy to use for reliable and stable video output. specificationItem Type: HD Multimedia Interface Switch_x000D_ Material: ABS_x000D_ Interface: HD Multimedia Interface_x000D_ Bandwidth: 340Mhz, 2.5Gbps_x000D_ Support: 4K PackageList1 x_x000D_ _x000D_ HDMultimediaInterfaceSwitch 1 x Charging Cable 1 x Instruction Manual