?Important?After connecting the computers and the monitors through KVM, you need to set the screen output mode on the computer (press Windows+P) and select the output mode in the pop-up window on the screen.We offer 12 months warranty. If you have any questions about the product, please contact us. ?Convenient Switching modes and Wide Compatibility? 1. Toggle selection on front panel; 2. Wired remote switch. Compatible with a variety of computer systems,such as Windows, Linux, Mac, Unix, Ubuntu, Raspberry and most other major OS; also supports HDMI devices without USB signal input like DVR, NVR etc. Support wired, wireless, mechanical, multimedia, and gaming K&M (Not support wireless bluetooth K&M). ?KVM 2 Monitors 4k 60hz? Our KVM supporting high resolution max up to 4K@60Hz, and also supports 3D and 1080P@60Hz or other lower resolution (Downward Compatible). Note: Only when both your computer Graphics card and monitor support 4K@60Hz then you can get 4K@60Hz effect, so if you want the max resolution you have to check your devices first. Also supports separate audio and microphone output.(Extended, mirrored or spliced display modes depend on your computer's graphics card). ?Support Simulation EDID? This KVM dual monitor switch can simulate the EDID of the display, store the resolution and refresh rate of the display,With EDID emulators in each input port, your computers always receive the correct display information and preventing displays setting change while switching inputs in display mode 1. Free you from the hassle of constantly adjusting display settings. ?HDMI Switch Dual Monitor with 3 USB 3.0 Ports? Dual monitor HDMI USB switch with 3 USB 3.0 ports for sharing keyboard,mouse,printer,scaner and other USB devices.supports ultra-fast USB 3.0 data transfer up to 5Gbps,backward compatible with USB 2.0/1.1 devices.The upgraded design hides the messy cables at the back, unique design makes the desktop more tidy, Say goodbye to cluttered cables. ?Dual Monitor KVM Switch? Ideal for access 2 PC with 2 monitors and 1 set of keyboard mouse. You can easily have a dual monitor setup per system or switch it to a single monitor system showing both systems (one on each monitor) and then easily toggle the keyboard/mouse between the 2 systems. Only when your computer supports dual display or multi display, you can use this KVM to achieve 2 PC to share 2 monitors.