Nearly every Nintendo Switch controller — even the standard Joy-Cons — can be used with other systems. If the controller is wireless, chances are that it connects using either Bluetooth or a 2.4Ghz signal. Bluetooth controllers are compatible with PC, Mac, iPhone, iPad, and Android — and depending on the controller, possibly other devices. 2.4Ghz controllers are made for PC and Mac. Wired controllers can connect to the Switch, and usually PC and Mac. You'll just need to plug the USB into your device of choice.