Portable Mini KeyboardUltra-small size,attached detachable USB-C cable,effectively saves desktop space. You can connect the mini keyboard (plug and play) and a normal-size keyboard with the same computer at the same time, they will not interfere with each other. Default function The default function of three keys is Copy,Paste,Search,Backspace,Save,Cut, All and Enter(Ctrl+C,Ctrl+V,Ctrl+F,Backspace,Ctrl+S,Ctrl+X,Ctrl+A,Enter).Plug and play,No software needed.Makes workflow super fast. Other function You can also use other functions, such as Shortcut keys, Multi-step operation, Multi-key in one, Undo, Redo, Play, Pause, Volume, Switch song, Forward, Backward, etc. You can control the light color and gradient mode of the case you want through the software or website. Programming by SoftwareThe Software is only for Windows System.Sometimes Windows Firewall will issue a warning when it starts.Don't worry,the Software is very safe! Software:https://dl.sayobot.cn/setting.zip