1.Setup the connection according to the connection diagram. 2.After all the PCs are started in step 1, then you can switch to any PC by keyboard hot keys, IR keys or the key pad on the KVM front panel. (For example, if you want to control the PC connected to HDMI Input 2 just press the "Select" button on front panel, or press digit button [2] on remote control, or the keyboard hotkey commands described following) 1.