Hi mstcitabria, for two-player mode, you will need to get a usb slave cable http://www.ikarus-modellbau.de/onlin...08251.38233896 or a dummy usb game commander http://www.ikarus-modellbau.de/onlin...945a3.39962507 You will need to plug in the original usb cable for either of these to work. Setup and calibrate the second radio or GC, and you're all set. Instructions for two-player mode are on pages 34-35 of your manual.