Switch between two computers each running four displays while sharing monitors speakers amp microphone a usb keyboard and mouse and an extra usb peripheral the sv231qdviua 2 port quad monitor dual link dvi usb kvm switch allows 2 pcs each with 4 dvi video outputs to share monitors 1 microphone and set of speakers 1 keyboard and 1 mouse as well as an additional usb 20 peripheral such as an external hard drive thumb drive printer or webcam the quad dvi kvm switch allows you to s