This 4 Port Dual DVI USB KVM Switch allows four PCs, each with dual DVI displays, to share two monitors, one microphone (and set of speakers), one keyboard and one mouse as well as two other USB peripherals. An ideal solution for graphic designers, CAD/CAM designers or educational and financial institutions, the Dual DVI USB KVM Switch allows you to instantly switch back and forth between PCs at the touch of a button while maintaining professional level video quality on both DVI monitors, in turn saving money by eliminating redundant peripheral purchases.