rotary switch, No power required, No additional software needed, Cable not included, Premium select button, Port Type: 3.5mm Stereo | Easy to use and install/Hot-swappable (no need to reboot computer)/New generic 2 Ports 3.5mm STEREO Manual Sharing Switch Box | 2 manual switch buttons/For small office or home office/2 Ports 3.5mm STEREO Switch Box | 1 audio equipment Select two speakers OR Two audio equipment Choose one speaker/3.5mm Stereo Manual Switch | How to Use: A) Computer, Notebook, Mobile, Audio, Tablet, etc 3.5mm stereo Device 1ea connect 2ea Speaker(Soundbar, earphone, 3.5mm sound device),B)Computer, Notebook, Mobile, Audio, Tablet, etc 3.5mm stereo Device 2ea connect 1ea Speaker(Soundbar, earphone, 3.5mm sound device)