Light Seller 4 Ports USB 2.0 KVM VGA Switch Box Adapter for PC Keyboard Mouse Monitor (MTWJ-4KVM) This 4-PORT USB2.0 KVM (Keyboard/VGA/Mouse) Switch Box allows you to control 4 computers with one monitor, USB keyboard, USB mouse, and USB printer or scanner. Max PC connection: 4 Support video quality, up to 1920*1440, bandwidth 200MHz Bandwidth: 200MHz. VGA Resolution: 1920*1400.