The XK-12 USB 12 Switch Interface from X-keys can convert input from any contact closure switch into a USB HID command. If features six switch ports which use standard 3.5mm stereo mini jack audio connectors. Because stereo mini is dual channel, a total of twelve switches can be connected by using 3.5mm Y-adapters, available separately. You can use any 3.5mm terminating switch you want, or you can choose from a selection of hand- and foot-operated options from X-keys. Input from the switch can be mapped to any mouse, keyboard, game controller, or other USB HID command. Plus, you can program in macros for keyboard shortcuts like Close, Minimize, Save, or even frequently-used text strings. Free programming software is available from the X-keys website for Windows and OS X to assist in configuration, and SDKs are available for software developers.