control 4 Dvi, Usb-equipped Pcs With A Single Peripheral Set, With Usb Dynamic Device Mapping To Avoid Switching Lag-time. The Sv431dviuddm 4-port Usb Dvi Kvm Switch Lets You Control 4 Dvi, Usb-equipped Pcs Using A Single Peripheral Set At High-definition Dvi Resolutions Up To 1920x1200.the Included Kvm Cables Provide A Ready-out-of-the-box Solution, While Usb Dynamic Device Mapping (ddm) And Display Data Channel (ddc) Features Work To Significantly Reduce Switching Lag-time And Improve Overall Compatibility With Your Connected Display And Input Devices, Saving You Time And Money.for The Next Level In Kvm Performance, This Dvi Kvm Switch Integrates Dual-core Dedicated Processing Per Channel And Innovative, Usb Ddm Technology That Enables You To Quickly Switch Between Connected Computers With Next-to-zero Delay. Ddm Maintains A Constant Communication Channel Between Your Usb Peripherals And Connected Systems, Avoiding The Time Necessary For Your Systems To Re-recognize The Devices When Switching.in Addition To Faster Switching, The Kvm Offers All-time Display Data Channel (full Ddc) Technology To Maintain Proper Display Detection Among Connected Systems, A Simple One-touch Button For Hot-key Selection And An Integrated 2-port Usb Hub Allowing You To Share Additional Peripherals.