A 'pass-thru' plug allows your standard joystick to remain connected. Digital Edition Connects a single gamepad or digital controller to a PC's gameport. Emulates a standard PC joystick without driver software. A 'pass-thru' plug allows your standard joystick to remain connected. All buttons are individually programmable.
All buttons are individually programmable.
This seems like a cool idea. I have to say that I have not used the product myself, but the idea seems cool, so if you're interested check it out on your own.