This usb foot switch keyboard mouse control foot pedal is equivalent to a standard USB keyboard and mouse with one key, the key can be defined through the supporting software as keyboard,mouse,multimedia,game,string,macro definition and MIDI function.One PC can support more than one USB foot pedal, but you need program one by one, then plug in your PC.Once this switch is configured, can it be moved to a different computer and used without the software. Macro Function: Programmable Comand and customize the combination of keyboard and mouse movements.After pressing the pedal, the computer will automatically perform the steps that have been set through the software. For example, it can be set to be pressing F1 and then 10ms later pressing F2 etc.. MIDI Cotroller User-defined Function: The MIDI function has three parts, command function, CC command function and PC command function.MIDI function enables guitarists to switch the types of musical instruments and control the sound informa