The cs1644a 4 port usb dvi dual view kvmp switch is a multi application device that integrates a 4 port kvm switch with 2 port usb hub the cs1644a features multi view capabilities which allow two switches to be daisy chained for a dual triple or quadview display across multi monitor installations the cs1644a supports advanced nvidia 3d vision ready 120 hz 3d displaying allowing you to manage various 3d visual effects it allows you to manipulate all connected computers from a single con