Number of Input/Output Ports: The switcher has two input ports and one output port (2 in 1 out), This allows you to connect two audio or video sources to one TV set that standard yellow-red-white connectors enabled. This is useful if you have limited inputs on your TV, and you want to switch between multiple devices without constantly unplugging and plugging in cables. Plug&Play: No extra power supply and software drivers are needed, just the selection button on the composite av switcher box to choose the av sources. connectors: Switchers typically use connectors for audio and video signaling. They are equipped with red, white and yellow plugs for left and right channel audio and video signal connections. Switching method: The switcher can be switched by manual buttons. It is possible to have 2 input sources and switch them to 1 output monitor port. The metal casing of this 2-Port audio video selector switch provides excellent durability and resistance, ensuring a long lifespan and stable, reliable connections. And the simple button switch allows for easy operation. Compatibility: These switches are usually compatible with a variety of audio and video devices, such as DVD players, game consoles, set-top boxes and televisions, monitors, projectors, and so on. Make sure your device has the appropriate connectors for connection. Simple Operation:The switcher is designed to be simple and easy to use, allowing the user to switch input sources at the push of a button. Colour:Black Material:Metal Size:13.9x7.2x2.6cm Package Contents: 2 x Audio Video switcher Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.