【Dual Monitor KVM Switch for 3 PC】This Dual Monitor KVM HDMI Switch allows to control 3 computers by 1 set of keyboard & mouse and 2 monitors(Extend display mode or Copy display mode) 【Ultra HD 4K@60H 】USB 3.0 Dual Monitor KVM switch HDMI support resolution 𝟒𝐊@𝟔𝟎𝐇𝐳.3 computers 2 monitors switch aslo support input terminal to connect 2 computers with different resolutions, e.g. one is 4K@60Hz, the other is 4K@30Hz, 1440P@60Hz, 3D,1080P@60Hz or lower resolution.Note: if you need a 4K resolution , please use HDMI 2.0 cable and the length of the HDMI cables more short more better, and make sure your computers and monitors support 4K ! 【Dual Monitor KVM Switch with 4 USB 3.0 Ports】USB3.0 KVM switch with 4 USB 3.0 ports which can recognize keyboard,mouse,printer,scaner and other USB devices. USB 3.0 offers data transfer speeds of up to 5Gbps, while USB 2.0 offers data transfer speeds of only 480Mbps.☛Note:If the input USB3.0 ports are not connected to the KVM or connected incorrectly, the output USB device will not be recognized. 【EDID Emulator】USB3.0 HDMI KVM switch can simulate the EDID of the monitor, store the resolution and refresh rate of the display.✔✔✔✔How EDID works☛☛☛☛ ①Lock screen,when you switch from PC1 to PC2, and then switch back to PC1 from PC2, the windows of PC1 will keep the order before switching and will not be disrupted. ② Automatically identifies and applies the best resolution to the monitor. 【2 Switching Mode&Indicator】This KVM Switch with 2 swtich methdos that are pressing the button on the panel and the wired controller（included).The three color indicator light will show which computer is the active computer. 【Extended Mode&Copy Mode】Dual display KVM switches require 2*HDMI connections per computer, and for computers with discrete and integrated graphics cards require both HDMI ports to be belong of the discrete graphics card. ☛Note:Press "Window+P",a small window will pop up, in which to choose "Duplicate" Mode or "Extend" Mode. 【Packing list】1*Dual Monitor USB3.0 HDMI KVM Switch+3*USB3.0 Cable(1.5m/4.92ft)+1*Wired Controller1.5m/4.92ft+1*User Manuals+ 1*DC12V Power Adapter1.5m/4.92ft.