Lego(R) Power Functions to USB Adapter
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This adapter will connect Lego(R) Power Functions products to USB ports. We have custom made these using real Lego(R) Power Functions parts. We use these to make power functions motors spin in our Lego city here in our retail store. We also have it attached to our Great Ball Contraption and fan made out of Lego we keep on our desk. It is a great way to provide continuous power to any power functions device. Motor not included. This provides full power to the motor. If you want to be able to control the speed, you would have to hook it up to a Power Functions Infrared Receiver & use a Remote Control or you could use a stepless USB fan controller.