... turned off before installation.Connect the VGA cables, USB cables, to the computer ports of KVM switch.Connect the Keyboard, VGA monitor, Mouse, ... go KVM switch.Note: Please do not switch the PC port ( i. e. Do not press the push button of KVM switch during the computers are ... enough power to KVM switch, please add a DC5V, 500MA~1A to the power jack. The power jack polarity is center positive.Don`t ...