USB cable for power3.5mm audio jackSits comfortably on your LCD monitorBuilt-in volume controlCan be used as a normal desk speaker or a laptop bar speakerClip attach easily to your laptopTotal RMS power:6W RMS(3W x 2)Total peak power:6WPlug and Play2.0 portable USB speakersConvenient cable managementDigital volume and mute controlsClip design for attaching to your laptop easilyCompatible with XP，Vista，Win7，Mac and OSX40MM X 2PCS neodymium type full-range drivers