Description:Four hosts share a set of display / keyboard and mouse to improve work efficiency.4K@60HZ clear picture quality. Support 4Kx2K high-definition resolution clear and detailed display.Easy switching, neat desktop. High-speed transmission without lag, no loss of picture and sound quality.USB transmission technology mouse and keyboard without delay.Metal shell, wear-resistant, high temperature resistant, good heat dissipation.Specification:Item type: 4K USB KVM Switch Box(USB Interface)Color: BlackSize: 110x60x33mmPicture quality: 4K X 2K@60HzSwitching mode: Button / controllerInterface: HDMI-Compatible/USBShell material: MetalChip: High performance chipMouse&keyboard Requirements:1)the KVM Switch has very limited compatibility with wireless keyboards&mouse.So we do not recommend to use it with wireless devices.2)Most mechanical keyboards and mouses are not supported.And we recommend 104-key standard keyboard only.3)the multi-media key and some special keys might not be supported.4)Keyboard short keys switch are not supported.Packing list:1 x HDMI-Compatible KVM Switch1 x Desktop Controller1 x USB line1 x Power cable4 x USB cable1 x User manual