3.5mm Audio selector This is a bidirectional switcher for 3.5mm audio ports. 3.5mm audio selector designed for customers having several audio sources and outputs.Main functions: ? Select audio input between 1 and 2 with 1/2 switcher and get one output; ? Select audio output between 1 and 2 to receive one input;How to use: ? connect two audio sources (like CD player / computer) to 1/2 ports and one audio output (like speakers) to IN/OUT port; ? connect one audio source to IN/OUT port and two audio outputs to 1/2 port.Features: Easy installation and simple operation. Only need to lightly press to mute the device; very useful under special conditions. Plug and play; No power supply and other software required; Won't affect sound quality. Analog signal maximum support 2V p-p input and output. Input and output frequency range: 20Hz ~ 20KHz. Use standard audio cable, input transmission distance up to 8 meters, output transmission distance up to 8 meters. Super small size; Compact and super mini size; Easy to place and suitable for your desktop and office.Note: Only three-segment headphones are supported (four-segment headphones are not supported)Package contains: 1* 3.5mm Audio Switch Switcher 1* 3.5mm Audio cable 1* User manualNote: Only one input can be played at a time.