HDMI KVM Switch - 4 Computers share 1 keyboard video mouse. any desktop pc with hdmi output like laptop,gaming computer,office pc,network server computer,mini pc can share same keybord monitor mouse,cut costs and keep desktop room clean. | USB Switch - Share 4 USB2.0 devices,support usb wireless keyboard mouse,printer,scanner,U disk, portable SSD drive, flash drive.plug & play,drive-free,compatible all os ,windows, dos, mac os, android,kinds of linux. | 4K@30Hz Monitor - 3840*2160/30Hz,1080P,4 orginal hdmi 1.4b kvm cables, sync with 3D audio video.4k monitor, smart tv,projector. | 2 ways to switch - desktop controller and faceplate button. you can use the controller or push the button to swaping the pc. the Led lights indicate working computer. usb powered no addtional dc adptor | Occasions and Events - great for group conference,advertising,office,multimedia,learning,financial securities,presentations,video teaching,public security monitor,video broadcasting system. | After connecting the KVM keyboard and mouse, it is best to refresh the keyboard and mouse drivers for each PC to ensure that the keyboard and mouse of a single computer work normally after connecting to KVM. This way, the keyboard and mouse can be used correctly when switching between two computers. Please contact technical support through Amazon to answer any questions during use. | What You Get: 1* KAGO 4 Port HDMI KVM Switch, 4* KVM HDMI Cables, 1* Desktop Controller, 1* User Guide. NOTE: 1. This KVM switch is not compatible with those host devices that have only USB C ports and do not have any USB A ports. 2. Not supported for use with docking station. 3. If you connect a wireless keyboard and mouse, please ensure that its working range meets the product requirements (within 1m/3.3ft for a single USB device, and within 0.3m/0.98ft for multiple USB devices). | Easy to install - connect and use, specially made HDMI KVM cable, one end of the cable is a USB 2.0 port and HDMI high-quality durable cable, when in use, plug the USB + HDMI head cable into the computer, USB is used to power the KVM Switch and transfer USB Data, HDMI is used for computer audio and video transfer. The other end of the cable (ONLY HDMI Male) is connected to the HDMI input of the 4 port KVM Switch. Plug and play, no need for additional power supply.