【Displayport KVM Switch 4 Computers】The 4 port KVM Switch 4 in 1 out support 1 set of mouse and keyboard to control 4 computers and share 1 monitor, and quickly switches between them with the push of a button, simplify your workspace and improve office productivity and gaming experience. Note: A DP cable is required and connection using any conversion cable is not supported in order to display images. 【Ultra HD 8K@60Hz】This USB3.0 KVM Switch displayport supports resolutions and refresh rates up to 8K@60Hz 4K@120Hz, and also supports 4K@60Hz or other lower resolution (Downward Compatible). Note: To achieve these resolutions, both your computer's graphics card and monitor must support 8K@60Hz or 4K@120Hz. Using a high-quality DP1.4 cable is recommended for smooth, seamless video output. 【USB 3.0 KVM Switch】This KVM Switches 4 computers 1 monitor with 4 USB 3.0 ports which can recognize keyboard, mouse, printer, scaner and other USB devices. USB 3.0 supports transfer speeds of up to 5Gbps, backward compatible with USB 2.0, 1.1, and 1.0, providing transfer speeds 10 times faster than USB 2.0. Note: Each computer needs to be connected to the KVM with either a USB 3.0 cable, otherwise the keyboard and mouse will not be recognized. 【Two Switching Modes】KVM switches support switch between 4 computer through infrared remote control (included) or panel button, LED lights indicate the corresponding computer. To use the remote control device, be sure to connect the IR cable to the device. Hotkey switching is not supported. 【Stable work】The 4 port KVM switch is equipped with a 12V 1A external power supply to ensure stable operation, even when connecting high-power USB devices. If you have any questions during use, please contact us. We have a professional technical team to help you solve your difficulties. Within 12 months, we will replace the switch at no charge. Note: This KVM switch must be connected to a DC 12V power adapter for proper operation. 1