Any switch can trigger an action from your computer. Connect up to 12 switches to the X-keys USB Switch Interface and program each switch with a function. Any keyboard shortcut your software uses can have a designated switch (copy, paste, save, open, close). Switch is easily set up to launch applications, open files, or type short lines of text like names, addresses, and account numbers. Switch is connected via Assistive technology standard 3.5 mm (1/8") phone plugs.