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 2. 0 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. The triple monitor DVI switch also features an integrated USB hub port which allows USB 2. 0 peripherals to be shared between attached systems, eliminating duplicate peripheral costs and offering the convenience of sharing stored data between PCs. The SV231TDVIUA 2-Port Triple Head DVI KVM Switch is backed by a Star Tech. com 3-year warranty and free lifetime technical support. PLEASE NOTE: While both DVI-I (analog mode) and DVI-D (digital only) are supported by the KVM, both source PCs must output the same signal type for proper switching. It is recommended, wherever possible, to use DVI-D cables across all PC to KVM and KVM to Console connections. If necessary, please contact our technical support team for assistance identifying your source.