This 3.5mm Stereo Audio A/B Switch for Mobile Devices and Computers from Sescom lets you switch between two different 3.5mm stereo sources, including computer. It requires no power and can be used bidirectionally. Additionally, it saves equipment from the wear and tear caused by constant connections and disconnections. The unit is configured with rear-mounted 3.5mm TRS connections and features a center-off rocker switch for disabling the audio source. It's housed in a rugged aluminum case.