Switch KM Lindy 4 Port USB 2.0 & Audio, negru Description Controls four PCs using a single keyboard & mouse across four monitors Switch via the unit's push buttons, keyboard hot keys and mouse roaming function Independent audio switching and 2 ports USB 2.0 Hub for sharing additional USB peripherals Plug & Play, no software required https://www.lindy-international.com/4-Port-USB-2-0-Audio-KM-Switch.htm? websale8=ld0101.ld021102&pi=32166&ci=10