Frisby 2.0 Computer Speakers with Headphone Jack for Private Listening versatile compact size fits nicely in small spaces and easy to connect to your PC, as well as CD/MP3 players and other audio devices ead Phone Jack is very convenient for private listening in your office or home Compatible with all PC models, Laptops, and all Mac models, mp3 players, discmans, walkmans equipped w/ headphone jack he system is complete, comes with all necessary cables, and accessories Controls :Power LED / Volume / Ear-Phone Jack