Master-IT USB+ uses breakthrough technologies which allow for flexibility and functionality never before seen in a KVM switch. The built-in USB DDM prevents interruptions in communication between shared devices and connected systems/computers. By DDM technology, switching ports without any lag time occurred can raise the efficiency and compatibility of KVM switch.UR-12-PLUS+ embedded DDM technology can 100% maintain the compatibility of the shared devices and connected systems. UR-12-PLUS + becomes the most reliable and robust KVM switch in the world. Connectpro UR-12-PLUS-KIT 2 port VGA KVM with Cables is one of many Desktop KVM/KVM Switches available through Office Depot. Made by Connectpro.