Dual Monitor KVM Switch HDMI 4 Port: This dual monitor KVM Switch is for you to control them using one set of keyboard, mouse and single or dual monitors to make your work space tidy and efficient, also a premium choice for working from home. Only when your computer supports dual display or multi display, you can use this KVM to achieve 4 PC to share 2 monitors. (Extended, mirrored or spliced display modes depend on your computer's graphics card). KVM Switch 4 Computers 2 Monitors Support Simulation EDID: This KVM dual monitor switch can simulate the EDID of the display, store the resolution and refresh rate of the display, it comes with EDID emulators in each input port, keep PCs always having correct display information. Without EDID, your windows may move around when switching. No longer have to sit and wait for the windows to adjust.