KVM Switch 1 Monitor 2 Computers: This HDMI KVM Switch with 4 USB ports, and allows you to control 2 computers with only one set of USB devices such as a set of keyboard, mouse and printer on one monitor. You can easily switch between two computers, which keeps your workspace tidy. [NOTE: MUST Connect both two USB A to B cables for the Power Supply and data transfer!!!] Support Up to Ultra HD 4K@60Hz: UGREEN KVM switches support resolution up to 4K@60Hz, also support 4K@30Hz, 2560*1440@120Hz or lower resolution. This HDMI KVM switch also supports HDMI 2.0, HDCP2.2/1.4, USB 2.0, 3D and HDR, which makes image display more exquisite and realistic, color is more bright and moving, really giving a feast for your eyes. [NOTE: Please ensure that the resolution of the two devices at the input and the device at the output is consistent.]