4K@60Hz Ultra HD 4K Brings you Better Definition and Clarity, Makes Images that Look Life-like. HDMI KVM Switch is equipped with top grade image sensor. Premium and Compact Design HDMI KVM Switch Multiple cooling, anodic oxidation and aluminum alloy body. Operation System Compatibility Compatible with Windows, Unix and Mac OS X. Compatibile with the BASIC wired/wireless keyboard/mouse (maybe not supports any wired/wireless game/multimedia keyboards or mechanical keyboards). Hot Key Switch Supported You can switch input source via your keyboard, much convenient and fast (hot key: Scroll Lock + Scroll Lock+ number and so on). Note: it could not support hot key switching when connect to USB 2.0 port.