?Stable Working?KVM has an external power supply design and comes with a 5V 2A USB charging cable, when connecting external hard disk and other high-power USB devices, please connect the external power supply due to the small current provided by the computer USB port itself. ?HD 8K@60HZ and USB3.0? This switcher supports 8K@60HZ HD resolution and 4K@120HZ, 2K@1440HZ and other resolutions, while the USB also supports USB3.0, USB transfer rate up to 5Gbp/s, widely compatible with wired, 2.4G wireless, mechanical, gaming keypads, etc. (does not support wireless bluetooth keypads), it also supports Printers, scanners, USB cameras and USB sound cards can bring you a great sharing experience. Support Windows/Vista/XP and Mac OS, Linux and Unix and other operating systems. ?2 Switching Methods? This switcher has 2 switching methods: push button switching and desktop controller switching, switching two sources with one button. Using the desktop controller to switch can store the switcher host and related cables farther away from the desktop, the desktop is more clean and tidy. Both switching mode switch response time in 2-5 seconds, if only connected to the USB part is a second cut. This model does not support keyboard hotkey switching. ?Packing List and Service? This KVM kit includes 1 x 2*2 HDMI KVM switch, 1 x 1.5m desktop controller, 2 x 1m USB3.0 cables, 1 x 1m USB power cable and 1 x user manual, users need to provide their own HDMI cables (6pcs in total). In addition, we provide 1 year warranty service, if you have any questions or concerns, please contact us. ?KVM Switch 2 monitors 2 computers? This 8K@60HZ HDMI KVM switch allows you to use one set of keyboard and mouse to control 2 computers, share 4 USB devices and 2 monitors, and at the same time, the output has 2 HDMI ports can be connected to 2 monitors, and can be used in 2 modes. Duplicate Mode: both monitors display the same screen, Extended Mode: both monitors display different screens. Note: This KVM switch requires your computer to have 2 HDMI output ports to support dual-screen display.