The SV231TDVIUA 2-Port Triple Monitor DVI USB (Universal Serial Bus) KVM Switch allows 2 PCs (each with 3 DVI video outputs) to share monitors, 1 microphone & set of speakers, 1 keyboard & 1 mouse, as well as an additional USB (Universal Serial Bus) 2.0 peripheral such as an external hard drive, thumb drive, printer, or webcam. The Triple DVI KVM switch enables you to switch back & 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 1920x 1200. The triple monitor DVI switch also features an integrated USB (Universal Serial Bus) hub port which allows USB (Universal Serial Bus) 2.0 peripherals to be shared between attached systems, eliminating duplicate peripheral costs & 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 & free lifetime technical support. PLEASE NOTE: While both DVI-I (analog mode) & 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 & KVM to Console connections. If necessary, please contact our technical support team for assistance identifying your source.