The sv231tdviua 2 port triple monitor dvi usb kvm switch allows 2 pcs each with 3 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 triple dvi kvm switch enables you to switch back and forth between 2 multi dvi pcs at the touch of a button while maintaining professional level video quality on all monitors at resolutions up to 1920x1200