Attention: Please plug in all the cables included in the product box; the two USB cables are for the front KVM USB ports. If you don't plug into your computers and KVM switcher, your keyboard, mouse, and USB 3.0 hub will not work. Attention laptop Users: Check how many external monitors are supported by your devices before you buy. For example, an M1 Macbook Pro only supports one external monitor which will not work with this product. Aluminum Alloy shell - We want to give customers the best quality; we use aluminum alloy for the body, which provides you with an excellent premium look, great drop resistance, light-weight, strong, and robust corrosion resistance Hotkey - Tired of a manual button switch? This product gives you a convenient way to switch, including keyboard hotkeys switch, mouse wheel switch Digital Display- KVM Switch 2 port with a digital display which lets you easy to see the current channel even in the dark investment Two computers two DP