Usb kvm switch for 4 pcs the d link dkvm 4u kvm switch is a handy device that allows you to control up to 4 pcs using only one monitor keyboard and mouse the monitor and the two input devices are connected directly to this kvm switch and not to the client computers for office users with a need for several pcs this kvm switch box eliminates the need for several monitors keyboards and mice saving the money and desktop space the dkvm 4u is also a cost effective solution for control of several serve